diff --git a/mobile/README.md b/mobile/README.md
index 9c6362f..1d80929 100644
--- a/mobile/README.md
+++ b/mobile/README.md
@@ -14,12 +14,13 @@ architecture-decision thread in this session's handoff.
 **Status:** Phase 1 — real Feed/Explore/Notifications/Pets tabs against the
 live backend, not just a connectivity scaffold anymore. Post creation,
 comments, repost, pet profile detail (view/follow/edit/followers-following),
-stories (tray/creation/viewer), video playback, and search are done and
-verified end-to-end against the live backend. Health tracking, milestones,
-and message sending are still not built — see "What's not built yet" below.
-Android is the priority platform; iOS builds need a Mac + Apple Developer
-account and come later (same codebase, no separate source tree — see
-"Android-first, then iOS" below).
+stories (tray/creation/viewer), video playback, search, health tracking
+(consent gate + weight/vet/vaccine logs), milestones, and message
+sending/receiving are done and verified end-to-end against the live backend.
+Push notifications are wired end-to-end but not yet deliverable — see "Push
+notifications" below. Android is the priority platform; iOS builds need a
+Mac + Apple Developer account and come later (same codebase, no separate
+source tree — see "Android-first, then iOS" below).
 
 ## Architecture
 
@@ -163,10 +164,14 @@ mobile/
         notifications.tsx   # notifications list
         pets.tsx             # owner's pets + active-pet switcher
       messages/index.tsx    # conversations list
+      messages/[conversationId].tsx  # chat detail/compose, polls messages.list while focused (no realtime)
       search.tsx             # pets/people/hashtags search, three tabs over one debounced query
       post-new.tsx           # create a photo post (pick/upload → posts.create)
       story-new.tsx           # create a photo story (pick/upload → stories.create)
       story-viewer.tsx        # full-screen story playback (tap zones, progress bars, view tracking)
+      milestone-new.tsx        # create a milestone post (type picker + optional photo → milestones.create)
+      pets/[petId]/health/index.tsx  # weight/vet/vaccine logs, gated by HealthConsentGate
+      pets/[petId]/milestones.tsx    # a pet's milestone posts (milestones.listByPet)
       posts/[postId]/comments.tsx  # read/write/delete comments for a post
       image-viewer.tsx        # full-screen tapped-image lightbox
   src/
@@ -174,6 +179,7 @@ mobile/
     api/types.ts             # inferRouterOutputs<AppRouter> shortcuts (Pet, FeedPost, ...)
     context/ActivePetContext.tsx  # MMKV-backed active-pet state
     hooks/useDebounce.ts      # generic debounce hook (search input)
+    hooks/usePushNotifications.ts  # permission + Expo push token registration (owner.registerPushToken)
     lib/env.ts               # typed EXPO_PUBLIC_* access
     lib/tokenCache.ts        # Clerk session persistence via expo-secure-store
     lib/storage.ts            # MMKV instance + TanStack Query sync persister
@@ -181,9 +187,11 @@ mobile/
     lib/format.ts             # pet display name + relative-time formatting
     lib/sponsor.ts             # active-sponsor check
     lib/upload.ts              # direct PUT of a picked image to a presigned Supabase URL
+    lib/milestone-meta.ts      # MilestoneType → German label/icon map
     theme/tokens.ts            # design tokens mirroring the web app's DESIGN.md
     components/                 # Button, TextField, Card, PostCard, PawButton, PetAvatar,
                                  # PetIdentityBadges, FollowButton, StoryTray, PawRing, VideoPlayer
+    components/health/          # HealthConsentGate, WeightLogSection, VetVisitSection, VaccineSection
 ```
 
 ## Android-first, then iOS
@@ -210,11 +218,28 @@ switching, persisted cache for fast reopen) plus a full pet profile
 repost ("Paw-Back") creation, stories (tray/creation/viewer via
 `expo-video`-adjacent `expo-image`, plus `PawRing` seen/unseen indicator),
 video playback (`expo-video` against Mux HLS, polling while `PROCESSING`),
-and search (pets/people/hashtags, `search.pets`/`byOwner`/`byHashtag`) are
-done and verified end-to-end against the live backend on a real Android
+search (pets/people/hashtags, `search.pets`/`byOwner`/`byHashtag`), health
+tracking (consent gate + weight/vet visit/vaccine logs — feeding info,
+emergency vet, and the shareable Health Card are web-only for now),
+milestones (view + create, restricted to the 5 user-initiated types), and
+messaging (conversation list + chat detail/compose, polling while the
+screen is focused since messages.ts has no realtime mechanism) are done
+and verified end-to-end against the live backend on a real Android
 emulator. Still missing, roughly in the order they'd unblock the most:
 
-- Health tracking, milestones
-- Sending messages (conversations list works; no chat detail/compose screen)
-- Push notifications
 - No i18n — the whole app is hardcoded German text, matching the sign-in screen
+
+### Push notifications — wired but not yet deliverable
+
+`usePushNotifications` (in `app/_layout.tsx`) requests notification
+permission and registers the resulting Expo push token with the backend
+(`owner.registerPushToken`); `src/lib/notify.ts` on the web side sends a
+best-effort push through Expo's push API alongside every in-app
+Notification it creates (follow, reaction, comment, message, ...). Minting
+a real token needs an **EAS project id** (`app.json`'s
+`extra.eas.projectId`, set once via `eas init` — free, no EAS Build
+required, but does need an Expo account login). Until that's done, the
+permission prompt shows and is granted, but `getExpoPushTokenAsync` has
+nothing to attach to and the hook no-ops with a console warning
+(`[push] No EAS project id configured...`) — confirmed via `adb logcat` on
+2026-09-06. No Owner row has an `expoPushToken` set until this is run.
diff --git a/mobile/app.json b/mobile/app.json
index 96cfa86..d25f4f6 100644
--- a/mobile/app.json
+++ b/mobile/app.json
@@ -39,7 +39,14 @@
           "cameraPermission": "Erlaube PawFeed den Zugriff auf die Kamera, um ein Foto für deinen Beitrag aufzunehmen."
         }
       ],
-      "expo-video"
+      "expo-video",
+      [
+        "expo-notifications",
+        {
+          "icon": "./assets/android-icon-monochrome.png",
+          "color": "#f97316"
+        }
+      ]
     ]
   }
 }
diff --git a/mobile/app/(app)/_layout.tsx b/mobile/app/(app)/_layout.tsx
index 62d892a..0e8623f 100644
--- a/mobile/app/(app)/_layout.tsx
+++ b/mobile/app/(app)/_layout.tsx
@@ -27,7 +27,10 @@ export default function AppLayout() {
       <Stack.Screen name="pets/[petId]/edit" options={{ ...headerOptions, title: "Profil bearbeiten" }} />
       <Stack.Screen name="pets/[petId]/followers" options={{ ...headerOptions, title: "Follower" }} />
       <Stack.Screen name="pets/[petId]/following" options={{ ...headerOptions, title: "Folgt" }} />
+      <Stack.Screen name="pets/[petId]/health/index" options={{ ...headerOptions, title: "Gesundheit" }} />
+      <Stack.Screen name="pets/[petId]/milestones" options={{ ...headerOptions, title: "Meilensteine" }} />
       <Stack.Screen name="posts/[postId]/comments" options={{ ...headerOptions, title: "Kommentare" }} />
+      <Stack.Screen name="messages/[conversationId]" options={{ ...headerOptions, title: "Nachricht" }} />
       <Stack.Screen name="search" options={{ ...headerOptions, title: "Suche" }} />
       <Stack.Screen
         name="post-new"
@@ -47,6 +50,15 @@ export default function AppLayout() {
           headerLeft: () => <CloseModalButton />,
         }}
       />
+      <Stack.Screen
+        name="milestone-new"
+        options={{
+          ...headerOptions,
+          title: "Neuer Meilenstein",
+          presentation: "modal",
+          headerLeft: () => <CloseModalButton />,
+        }}
+      />
       <Stack.Screen
         name="image-viewer"
         options={{ headerShown: false, presentation: "fullScreenModal", animation: "fade" }}
diff --git a/mobile/app/(app)/messages/[conversationId].tsx b/mobile/app/(app)/messages/[conversationId].tsx
new file mode 100644
index 0000000..eeb30c5
--- /dev/null
+++ b/mobile/app/(app)/messages/[conversationId].tsx
@@ -0,0 +1,135 @@
+import { useCallback, useEffect, useRef, useState } from "react";
+import { View, Text, FlatList, KeyboardAvoidingView, Platform, StyleSheet } from "react-native";
+import { useLocalSearchParams } from "expo-router";
+import { useQuery, useMutation, useQueryClient } from "@tanstack/react-query";
+import { useTRPC } from "../../../src/api/trpc";
+import { useActivePet } from "../../../src/context/ActivePetContext";
+import { TextField } from "../../../src/components/TextField";
+import { Button } from "../../../src/components/Button";
+import { formatRelativeTime } from "../../../src/lib/format";
+import { colors, radii, typography } from "../../../src/theme/tokens";
+import type { ChatMessage } from "../../../src/api/types";
+
+const POLL_INTERVAL_MS = 4000;
+
+/**
+ * Chat detail/compose screen — messages.ts is pure request/response (no
+ * realtime mechanism, per README), so new messages arrive via polling while
+ * this screen is focused rather than a subscription.
+ */
+export default function ConversationScreen() {
+  const { conversationId } = useLocalSearchParams<{ conversationId: string }>();
+  const trpc = useTRPC();
+  const queryClient = useQueryClient();
+  const { activePetId } = useActivePet();
+  const listRef = useRef<FlatList<ChatMessage>>(null);
+
+  const [body, setBody] = useState("");
+
+  const { data, isLoading } = useQuery({
+    ...trpc.messages.list.queryOptions({ conversationId, petId: activePetId ?? "" }),
+    enabled: !!activePetId,
+    refetchInterval: POLL_INTERVAL_MS,
+  });
+  const messages = data?.messages ?? [];
+
+  const invalidate = () =>
+    queryClient.invalidateQueries({
+      queryKey: trpc.messages.list.queryOptions({ conversationId, petId: activePetId ?? "" }).queryKey,
+    });
+
+  const sendMutation = useMutation(
+    trpc.messages.send.mutationOptions({
+      onSuccess: async () => {
+        setBody("");
+        await invalidate();
+        await queryClient.invalidateQueries(trpc.conversations.pathFilter());
+        setTimeout(() => listRef.current?.scrollToEnd({ animated: true }), 100);
+      },
+    })
+  );
+
+  // Mark received messages read as soon as the list loads (messages.list already
+  // does this server-side on read, but the inbox badge also needs a fresh count).
+  useEffect(() => {
+    if (activePetId) queryClient.invalidateQueries(trpc.conversations.pathFilter());
+    // eslint-disable-next-line react-hooks/exhaustive-deps
+  }, [messages.length]);
+
+  const handleSubmit = useCallback(() => {
+    if (!body.trim() || !activePetId) return;
+    sendMutation.mutate({ conversationId, senderPetId: activePetId, body: body.trim() });
+  }, [body, activePetId, conversationId, sendMutation]);
+
+  return (
+    <KeyboardAvoidingView style={styles.flex} behavior={Platform.OS === "ios" ? "padding" : undefined} keyboardVerticalOffset={80}>
+      {!isLoading && (
+        <FlatList
+          ref={listRef}
+          data={messages}
+          keyExtractor={(item) => item.id}
+          contentContainerStyle={styles.list}
+          onContentSizeChange={() => listRef.current?.scrollToEnd({ animated: false })}
+          renderItem={({ item }) => <MessageBubble message={item} isOwn={item.senderPet.id === activePetId} />}
+          ListEmptyComponent={
+            <View style={styles.center}>
+              <Text style={typography.body}>Noch keine Nachrichten. Schreib die erste!</Text>
+            </View>
+          }
+        />
+      )}
+
+      <View style={styles.inputRow}>
+        <TextField
+          placeholder="Nachricht schreiben…"
+          value={body}
+          onChangeText={setBody}
+          maxLength={1000}
+          style={styles.input}
+        />
+        <Button
+          title={sendMutation.isPending ? "…" : "Senden"}
+          onPress={handleSubmit}
+          disabled={!body.trim() || sendMutation.isPending}
+          style={styles.sendButton}
+        />
+      </View>
+    </KeyboardAvoidingView>
+  );
+}
+
+function MessageBubble({ message, isOwn }: { message: ChatMessage; isOwn: boolean }) {
+  return (
+    <View style={[styles.bubbleRow, isOwn && styles.bubbleRowOwn]}>
+      <View style={[styles.bubble, isOwn ? styles.bubbleOwn : styles.bubbleOther]}>
+        <Text style={[styles.bubbleText, isOwn && styles.bubbleTextOwn]}>{message.body}</Text>
+      </View>
+      <Text style={styles.timestamp}>{formatRelativeTime(message.createdAt)}</Text>
+    </View>
+  );
+}
+
+const styles = StyleSheet.create({
+  flex: { flex: 1, backgroundColor: colors.porchWhite },
+  center: { flex: 1, alignItems: "center", justifyContent: "center", padding: 24 },
+  list: { padding: 16, flexGrow: 1, gap: 10 },
+  bubbleRow: { alignItems: "flex-start", gap: 3, maxWidth: "80%" },
+  bubbleRowOwn: { alignSelf: "flex-end", alignItems: "flex-end" },
+  bubble: { paddingHorizontal: 14, paddingVertical: 10, borderRadius: radii.xl },
+  bubbleOther: { backgroundColor: colors.whisperGray, borderBottomLeftRadius: 4 },
+  bubbleOwn: { backgroundColor: colors.marigoldOrange, borderBottomRightRadius: 4 },
+  bubbleText: { ...typography.body },
+  bubbleTextOwn: { color: colors.pureWhite },
+  timestamp: { ...typography.label, textTransform: "none", letterSpacing: 0, fontSize: 10 },
+  inputRow: {
+    flexDirection: "row",
+    alignItems: "center",
+    gap: 8,
+    padding: 12,
+    borderTopWidth: 1,
+    borderTopColor: colors.hairlineGray,
+    backgroundColor: colors.pureWhite,
+  },
+  input: { flex: 1 },
+  sendButton: { width: 88 },
+});
diff --git a/mobile/app/(app)/messages/index.tsx b/mobile/app/(app)/messages/index.tsx
index e52bc06..7d69b0d 100644
--- a/mobile/app/(app)/messages/index.tsx
+++ b/mobile/app/(app)/messages/index.tsx
@@ -1,5 +1,6 @@
-import { View, Text, FlatList, ActivityIndicator, StyleSheet } from "react-native";
+import { View, Text, FlatList, Pressable, ActivityIndicator, StyleSheet } from "react-native";
 import { useQuery } from "@tanstack/react-query";
+import { useRouter } from "expo-router";
 import { useTRPC } from "../../../src/api/trpc";
 import { useActivePet } from "../../../src/context/ActivePetContext";
 import { PetAvatar } from "../../../src/components/PetAvatar";
@@ -7,13 +8,10 @@ import { formatPetName, formatRelativeTime } from "../../../src/lib/format";
 import { colors, typography } from "../../../src/theme/tokens";
 import type { Conversation } from "../../../src/api/types";
 
-/**
- * Conversations list only (conversations.list) — no chat detail/send screen
- * yet, matches web's messages.ts having zero realtime mechanism (pure
- * request/response, so this would need to poll once a detail screen exists).
- */
+/** Conversations list (conversations.list) — taps a row to open the chat detail/compose screen. */
 export default function MessagesScreen() {
   const trpc = useTRPC();
+  const router = useRouter();
   const { activePetId } = useActivePet();
 
   const { data, isLoading, error } = useQuery({
@@ -43,7 +41,9 @@ export default function MessagesScreen() {
       keyExtractor={(item) => item.id}
       contentContainerStyle={styles.list}
       ItemSeparatorComponent={() => <View style={styles.separator} />}
-      renderItem={({ item }) => <ConversationRow conversation={item} />}
+      renderItem={({ item }) => (
+        <ConversationRow conversation={item} onPress={() => router.push(`/messages/${item.id}`)} />
+      )}
       ListEmptyComponent={
         <View style={styles.center}>
           <Text style={typography.body}>Noch keine Unterhaltungen.</Text>
@@ -53,9 +53,9 @@ export default function MessagesScreen() {
   );
 }
 
-function ConversationRow({ conversation }: { conversation: Conversation }) {
+function ConversationRow({ conversation, onPress }: { conversation: Conversation; onPress: () => void }) {
   return (
-    <View style={styles.row}>
+    <Pressable style={styles.row} onPress={onPress}>
       <PetAvatar name={conversation.otherPet.name} avatarKey={conversation.otherPet.avatarKey} />
       <View style={styles.rowText}>
         <View style={styles.nameRow}>
@@ -73,7 +73,7 @@ function ConversationRow({ conversation }: { conversation: Conversation }) {
         ) : null}
       </View>
       <Text style={styles.timestamp}>{formatRelativeTime(conversation.updatedAt)}</Text>
-    </View>
+    </Pressable>
   );
 }
 
diff --git a/mobile/app/(app)/milestone-new.tsx b/mobile/app/(app)/milestone-new.tsx
new file mode 100644
index 0000000..a36f436
--- /dev/null
+++ b/mobile/app/(app)/milestone-new.tsx
@@ -0,0 +1,167 @@
+import { useCallback, useState } from "react";
+import { View, Text, Image as RNImage, Pressable, ScrollView, ActivityIndicator, StyleSheet, Alert } from "react-native";
+import { useRouter } from "expo-router";
+import * as ImagePicker from "expo-image-picker";
+import { useMutation, useQueryClient } from "@tanstack/react-query";
+import { ImagePlus } from "lucide-react-native";
+import { useTRPC } from "../../src/api/trpc";
+import { useActivePet } from "../../src/context/ActivePetContext";
+import { uploadImageToSupabase } from "../../src/lib/upload";
+import { MILESTONE_META, USER_INITIATED_MILESTONE_TYPES, type CreatableMilestoneType } from "../../src/lib/milestone-meta";
+import { TextField } from "../../src/components/TextField";
+import { Button } from "../../src/components/Button";
+import { colors, radii, typography } from "../../src/theme/tokens";
+
+const ALLOWED_MIME_TYPES = ["image/jpeg", "image/png", "image/webp"];
+
+/**
+ * Port of web's MilestoneForm — a milestone is a structured Post
+ * (type=MILESTONE), created for the active pet only. Restricted to the 5
+ * user-initiated types; follower-threshold milestones are auto-triggered
+ * server-side (follows.ts) and never shown in this picker.
+ */
+export default function NewMilestoneScreen() {
+  const router = useRouter();
+  const trpc = useTRPC();
+  const queryClient = useQueryClient();
+  const { activePetId } = useActivePet();
+
+  const [milestoneType, setMilestoneType] = useState<CreatableMilestoneType>("BIRTHDAY");
+  const [notes, setNotes] = useState("");
+  const [asset, setAsset] = useState<ImagePicker.ImagePickerAsset | null>(null);
+  const [error, setError] = useState<string | null>(null);
+
+  const getPresignedUrlMutation = useMutation(trpc.posts.getPresignedUrl.mutationOptions());
+
+  const createMutation = useMutation(
+    trpc.milestones.create.mutationOptions({
+      onSuccess: async () => {
+        await queryClient.invalidateQueries(trpc.milestones.pathFilter());
+        await queryClient.invalidateQueries(trpc.feed.pathFilter());
+        router.back();
+      },
+      onError: (err) => setError(err.message),
+    })
+  );
+
+  const pickImage = useCallback(async () => {
+    const permission = await ImagePicker.requestMediaLibraryPermissionsAsync();
+    if (!permission.granted) {
+      Alert.alert("Zugriff auf Fotos wurde nicht erlaubt.");
+      return;
+    }
+    const result = await ImagePicker.launchImageLibraryAsync({ mediaTypes: ["images"], quality: 0.8 });
+    if (!result.canceled) setAsset(result.assets[0]);
+  }, []);
+
+  const handleSubmit = useCallback(async () => {
+    if (!activePetId) return;
+    setError(null);
+
+    try {
+      let imageKey: string | undefined;
+      if (asset) {
+        const mimeType = ALLOWED_MIME_TYPES.includes(asset.mimeType ?? "") ? (asset.mimeType as string) : "image/jpeg";
+        const { presignedUrl, key } = await getPresignedUrlMutation.mutateAsync({
+          petId: activePetId,
+          contentType: mimeType as "image/jpeg" | "image/png" | "image/webp",
+          fileSize: asset.fileSize ?? 0,
+        });
+        await uploadImageToSupabase(asset.uri, presignedUrl, mimeType);
+        imageKey = key;
+      }
+      createMutation.mutate({
+        petId: activePetId,
+        milestoneType,
+        notes: notes.trim() || undefined,
+        imageKey,
+      });
+    } catch {
+      setError("Upload fehlgeschlagen — bitte erneut versuchen.");
+    }
+  }, [activePetId, asset, milestoneType, notes, getPresignedUrlMutation, createMutation]);
+
+  const isSubmitting = getPresignedUrlMutation.isPending || createMutation.isPending;
+
+  return (
+    <ScrollView contentContainerStyle={styles.container}>
+      <Text style={styles.label}>Art des Meilensteins</Text>
+      <View style={styles.chipRow}>
+        {USER_INITIATED_MILESTONE_TYPES.map((type) => {
+          const meta = MILESTONE_META[type];
+          const Icon = meta.icon;
+          const active = milestoneType === type;
+          return (
+            <Pressable
+              key={type}
+              style={[styles.chip, active && styles.chipActive]}
+              onPress={() => setMilestoneType(type)}
+            >
+              <Icon color={active ? colors.pureWhite : colors.marigoldOrange} size={16} />
+              <Text style={[styles.chipText, active && styles.chipTextActive]}>{meta.label}</Text>
+            </Pressable>
+          );
+        })}
+      </View>
+
+      {asset ? (
+        <Pressable onPress={() => setAsset(null)}>
+          <RNImage source={{ uri: asset.uri }} style={styles.preview} />
+          <Text style={styles.previewHint}>Antippen, um das Foto zu entfernen</Text>
+        </Pressable>
+      ) : (
+        <Pressable style={styles.pickerButton} onPress={pickImage}>
+          <ImagePlus color={colors.marigoldOrange} size={22} />
+          <Text style={styles.pickerText}>Foto hinzufügen (optional)</Text>
+        </Pressable>
+      )}
+
+      <TextField
+        placeholder="Notizen (optional)"
+        value={notes}
+        onChangeText={setNotes}
+        maxLength={500}
+        multiline
+        style={styles.notes}
+      />
+
+      {error ? <Text style={styles.error}>{error}</Text> : null}
+
+      <Button title={isSubmitting ? "Wird geteilt…" : "Meilenstein teilen"} onPress={handleSubmit} disabled={isSubmitting} />
+      {isSubmitting && <ActivityIndicator color={colors.marigoldOrange} />}
+    </ScrollView>
+  );
+}
+
+const styles = StyleSheet.create({
+  container: { padding: 16, gap: 14, backgroundColor: colors.porchWhite, flexGrow: 1 },
+  label: { ...typography.label, textTransform: "none", letterSpacing: 0 },
+  chipRow: { flexDirection: "row", flexWrap: "wrap", gap: 8 },
+  chip: {
+    flexDirection: "row",
+    alignItems: "center",
+    gap: 6,
+    paddingHorizontal: 12,
+    height: 36,
+    borderRadius: radii.lg,
+    backgroundColor: colors.whisperGray,
+  },
+  chipActive: { backgroundColor: colors.marigoldOrange },
+  chipText: { ...typography.body, fontSize: 13 },
+  chipTextActive: { color: colors.pureWhite },
+  pickerButton: {
+    flexDirection: "row",
+    alignItems: "center",
+    justifyContent: "center",
+    gap: 8,
+    height: 48,
+    borderRadius: radii.lg,
+    borderWidth: 1,
+    borderColor: colors.hairlineGray,
+  },
+  pickerText: { ...typography.body, color: colors.ink },
+  preview: { width: "100%", height: 220, borderRadius: radii.md, backgroundColor: colors.hairlineGray },
+  previewHint: { ...typography.label, textTransform: "none", letterSpacing: 0, textAlign: "center", marginTop: 6 },
+  notes: { height: 88, textAlignVertical: "top", paddingTop: 12 },
+  error: { ...typography.body, color: colors.alertRed },
+});
diff --git a/mobile/app/(app)/pets/[petId]/health/index.tsx b/mobile/app/(app)/pets/[petId]/health/index.tsx
new file mode 100644
index 0000000..ce381eb
--- /dev/null
+++ b/mobile/app/(app)/pets/[petId]/health/index.tsx
@@ -0,0 +1,31 @@
+import { ScrollView, StyleSheet } from "react-native";
+import { useLocalSearchParams } from "expo-router";
+import { HealthConsentGate } from "../../../../../src/components/health/HealthConsentGate";
+import { WeightLogSection } from "../../../../../src/components/health/WeightLogSection";
+import { VetVisitSection } from "../../../../../src/components/health/VetVisitSection";
+import { VaccineSection } from "../../../../../src/components/health/VaccineSection";
+import { colors } from "../../../../../src/theme/tokens";
+
+/**
+ * Port of web's src/app/(app)/pets/[petId]/health/page.tsx, scoped to the
+ * three data-entry sections (weight/vet/vaccines). Feeding info, emergency
+ * vet, and the shareable Health Card (health.getOrCreateCard) are web-only
+ * for now — no mobile UI yet, matching the README's health-tracking scope.
+ */
+export default function PetHealthScreen() {
+  const { petId } = useLocalSearchParams<{ petId: string }>();
+
+  return (
+    <ScrollView contentContainerStyle={styles.container}>
+      <HealthConsentGate petId={petId}>
+        <WeightLogSection petId={petId} />
+        <VetVisitSection petId={petId} />
+        <VaccineSection petId={petId} />
+      </HealthConsentGate>
+    </ScrollView>
+  );
+}
+
+const styles = StyleSheet.create({
+  container: { padding: 16, gap: 24, backgroundColor: colors.porchWhite, flexGrow: 1 },
+});
diff --git a/mobile/app/(app)/pets/[petId]/index.tsx b/mobile/app/(app)/pets/[petId]/index.tsx
index f7e9316..c842342 100644
--- a/mobile/app/(app)/pets/[petId]/index.tsx
+++ b/mobile/app/(app)/pets/[petId]/index.tsx
@@ -1,6 +1,7 @@
 import { View, Text, FlatList, Pressable, ActivityIndicator, StyleSheet } from "react-native";
 import { useLocalSearchParams, useRouter } from "expo-router";
-import { useQuery } from "@tanstack/react-query";
+import { useQuery, useMutation } from "@tanstack/react-query";
+import { HeartPulse, Trophy, MessageCircle } from "lucide-react-native";
 import { useTRPC } from "../../../../src/api/trpc";
 import { useActivePet } from "../../../../src/context/ActivePetContext";
 import { PetAvatar } from "../../../../src/components/PetAvatar";
@@ -12,12 +13,11 @@ import { formatPetName } from "../../../../src/lib/format";
 import { colors, typography } from "../../../../src/theme/tokens";
 
 /**
- * Port of web's src/app/(app)/pets/[petId]/page.tsx, scoped to Phase 1.5:
- * identity, bio/adoption story, follower/following counts, follow toggle,
- * edit entry point (own pet), and the pet's own posts below. No
- * ProfileTabs/milestones split, no message button yet (no chat detail
- * screen exists to send to) — those match web's ProfileActions.tsx but
- * are deferred here.
+ * Port of web's src/app/(app)/pets/[petId]/page.tsx: identity, bio/adoption
+ * story, follower/following counts, follow toggle, edit entry point (own
+ * pet), Health/Milestones/Message entry points, and the pet's own posts
+ * below. No ProfileTabs split (Milestones is a separate route here, not an
+ * in-page tab) — that's a web-only layout choice, not a scope gap.
  */
 export default function PetProfileScreen() {
   const { petId } = useLocalSearchParams<{ petId: string }>();
@@ -32,6 +32,12 @@ export default function PetProfileScreen() {
 
   const isOwnPet = activePetId === petId;
 
+  const getOrCreateConversation = useMutation(
+    trpc.conversations.getOrCreate.mutationOptions({
+      onSuccess: (conversation) => router.push(`/messages/${conversation.id}`),
+    })
+  );
+
   if (isLoading) {
     return (
       <View style={styles.center}>
@@ -87,6 +93,28 @@ export default function PetProfileScreen() {
             activePetId && <FollowButton followerPetId={activePetId} followeePetId={petId} />
           )}
 
+          <View style={styles.iconRow}>
+            {isOwnPet && (
+              <Pressable style={styles.iconButton} onPress={() => router.push(`/pets/${petId}/health`)}>
+                <HeartPulse color={colors.ink} size={18} />
+                <Text style={styles.iconButtonText}>Gesundheit</Text>
+              </Pressable>
+            )}
+            <Pressable style={styles.iconButton} onPress={() => router.push(`/pets/${petId}/milestones`)}>
+              <Trophy color={colors.ink} size={18} />
+              <Text style={styles.iconButtonText}>Meilensteine</Text>
+            </Pressable>
+            {!isOwnPet && activePetId && (
+              <Pressable
+                style={styles.iconButton}
+                onPress={() => getOrCreateConversation.mutate({ senderPetId: activePetId, recipientPetId: petId })}
+              >
+                <MessageCircle color={colors.ink} size={18} />
+                <Text style={styles.iconButtonText}>Nachricht</Text>
+              </Pressable>
+            )}
+          </View>
+
           {pet.bio ? <Text style={styles.section}>{pet.bio}</Text> : null}
           {pet.adoptionStory ? (
             <View>
@@ -119,6 +147,9 @@ const styles = StyleSheet.create({
   stat: { alignItems: "center" },
   statCount: { ...typography.title, fontSize: 18 },
   statLabel: { ...typography.label, textTransform: "none", letterSpacing: 0 },
+  iconRow: { flexDirection: "row", gap: 20, marginTop: 14 },
+  iconButton: { alignItems: "center", gap: 4 },
+  iconButtonText: { ...typography.label, textTransform: "none", letterSpacing: 0, fontSize: 11 },
   section: { ...typography.body, alignSelf: "stretch", marginTop: 12 },
   sectionTitle: { ...typography.title, fontSize: 15, alignSelf: "stretch", marginTop: 16 },
   divider: { height: 1, backgroundColor: colors.hairlineGray, alignSelf: "stretch", marginTop: 16 },
diff --git a/mobile/app/(app)/pets/[petId]/milestones.tsx b/mobile/app/(app)/pets/[petId]/milestones.tsx
new file mode 100644
index 0000000..c00af75
--- /dev/null
+++ b/mobile/app/(app)/pets/[petId]/milestones.tsx
@@ -0,0 +1,99 @@
+import { View, Text, FlatList, Pressable, ActivityIndicator, StyleSheet } from "react-native";
+import { useLocalSearchParams, useRouter } from "expo-router";
+import { useQuery } from "@tanstack/react-query";
+import { Image } from "expo-image";
+import { Plus } from "lucide-react-native";
+import { useTRPC } from "../../../../src/api/trpc";
+import { useActivePet } from "../../../../src/context/ActivePetContext";
+import { getMediaUrl } from "../../../../src/lib/media-url";
+import { MILESTONE_META, type MilestoneType } from "../../../../src/lib/milestone-meta";
+import { colors, radii, typography } from "../../../../src/theme/tokens";
+import type { MilestonePost } from "../../../../src/api/types";
+
+/**
+ * Port of web's Milestones profile tab (milestones.listByPet). Structured
+ * milestone posts, not a separate data model — see src/trpc/routers/milestones.ts.
+ */
+export default function MilestonesScreen() {
+  const { petId } = useLocalSearchParams<{ petId: string }>();
+  const router = useRouter();
+  const { activePetId } = useActivePet();
+  const trpc = useTRPC();
+  const isOwnPet = activePetId === petId;
+
+  const { data: milestones = [], isLoading } = useQuery(trpc.milestones.listByPet.queryOptions({ petId }));
+
+  if (isLoading) {
+    return (
+      <View style={styles.center}>
+        <ActivityIndicator color={colors.marigoldOrange} />
+      </View>
+    );
+  }
+
+  return (
+    <FlatList
+      data={milestones}
+      keyExtractor={(item) => item.id}
+      contentContainerStyle={styles.list}
+      ItemSeparatorComponent={() => <View style={styles.separator} />}
+      renderItem={({ item }) => <MilestoneRow post={item} />}
+      ListEmptyComponent={
+        <View style={styles.center}>
+          <Text style={typography.body}>Noch keine Meilensteine.</Text>
+        </View>
+      }
+      ListFooterComponent={
+        isOwnPet ? (
+          <Pressable style={styles.addButton} onPress={() => router.push("/milestone-new")}>
+            <Plus color={colors.marigoldOrange} size={18} />
+            <Text style={styles.addButtonText}>Meilenstein hinzufügen</Text>
+          </Pressable>
+        ) : null
+      }
+    />
+  );
+}
+
+function MilestoneRow({ post }: { post: MilestonePost }) {
+  if (!post.milestone) return null;
+  const meta = MILESTONE_META[post.milestone.milestoneType as MilestoneType];
+  const Icon = meta.icon;
+  const image = post.images[0];
+
+  return (
+    <View style={styles.row}>
+      <View style={styles.iconCircle}>
+        <Icon color={colors.marigoldOrange} size={20} />
+      </View>
+      <View style={styles.rowText}>
+        <Text style={styles.rowTitle}>{meta.label}</Text>
+        <Text style={styles.rowDate}>{new Date(post.createdAt).toLocaleDateString("de-DE")}</Text>
+        {post.milestone.notes ? <Text style={styles.rowNotes}>{post.milestone.notes}</Text> : null}
+      </View>
+      {image && <Image source={{ uri: getMediaUrl(image.storageKey) }} style={styles.thumb} contentFit="cover" />}
+    </View>
+  );
+}
+
+const styles = StyleSheet.create({
+  list: { padding: 16, flexGrow: 1, backgroundColor: colors.porchWhite },
+  center: { flex: 1, alignItems: "center", justifyContent: "center", padding: 24, backgroundColor: colors.porchWhite },
+  separator: { height: 14 },
+  row: { flexDirection: "row", alignItems: "center", gap: 12 },
+  iconCircle: {
+    width: 40,
+    height: 40,
+    borderRadius: 20,
+    backgroundColor: colors.marigoldTint,
+    alignItems: "center",
+    justifyContent: "center",
+  },
+  rowText: { flex: 1, gap: 2 },
+  rowTitle: { ...typography.body, fontFamily: typography.title.fontFamily },
+  rowDate: { ...typography.label, textTransform: "none", letterSpacing: 0 },
+  rowNotes: { ...typography.body, fontSize: 13 },
+  thumb: { width: 48, height: 48, borderRadius: radii.md },
+  addButton: { flexDirection: "row", alignItems: "center", justifyContent: "center", gap: 8, height: 48, marginTop: 8 },
+  addButtonText: { ...typography.body, color: colors.marigoldOrange, fontFamily: typography.title.fontFamily },
+});
diff --git a/mobile/app/_layout.tsx b/mobile/app/_layout.tsx
index ce5a347..d438b7b 100644
--- a/mobile/app/_layout.tsx
+++ b/mobile/app/_layout.tsx
@@ -16,6 +16,7 @@ import { env } from "../src/lib/env";
 import { TRPCProvider, createMobileTRPCClient, makeQueryClient } from "../src/api/trpc";
 import { queryPersister } from "../src/lib/storage";
 import { ActivePetProvider } from "../src/context/ActivePetContext";
+import { usePushNotifications } from "../src/hooks/usePushNotifications";
 import { colors } from "../src/theme/tokens";
 
 /**
@@ -49,12 +50,21 @@ function ApiProviders({ children }: { children: React.ReactNode }) {
   return (
     <PersistQueryClientProvider client={queryClient} persistOptions={{ persister: queryPersister }}>
       <TRPCProvider trpcClient={trpcClient} queryClient={queryClient}>
-        <ActivePetProvider>{children}</ActivePetProvider>
+        <ActivePetProvider>
+          <PushNotificationRegistrar />
+          {children}
+        </ActivePetProvider>
       </TRPCProvider>
     </PersistQueryClientProvider>
   );
 }
 
+/** No UI — just runs the push-token registration side effect once signed in. */
+function PushNotificationRegistrar() {
+  usePushNotifications();
+  return null;
+}
+
 function LoadingScreen() {
   return (
     <View style={{ flex: 1, alignItems: "center", justifyContent: "center", backgroundColor: colors.porchWhite }}>
diff --git a/mobile/package-lock.json b/mobile/package-lock.json
index c20033a..a881c1a 100644
--- a/mobile/package-lock.json
+++ b/mobile/package-lock.json
@@ -23,6 +23,7 @@
         "expo-image": "~57.0.4",
         "expo-image-picker": "~57.0.16",
         "expo-linking": "~57.0.8",
+        "expo-notifications": "~57.0.17",
         "expo-router": "^5.1.11",
         "expo-secure-store": "~57.0.2",
         "expo-status-bar": "~57.0.1",
@@ -4636,6 +4637,12 @@
         }
       }
     },
+    "node_modules/badgin": {
+      "version": "1.2.3",
+      "resolved": "https://registry.npmjs.org/badgin/-/badgin-1.2.3.tgz",
+      "integrity": "sha512-NQGA7LcfCpSzIbGRbkgjgdWkjy7HI+Th5VLxTJfW5EeaAf3fnS+xWQaQOCYiny+q6QSvxqoSO04vCx+4u++EJw==",
+      "license": "MIT"
+    },
     "node_modules/balanced-match": {
       "version": "4.0.4",
       "resolved": "https://registry.npmjs.org/balanced-match/-/balanced-match-4.0.4.tgz",
@@ -5671,6 +5678,15 @@
         }
       }
     },
+    "node_modules/expo-application": {
+      "version": "57.0.2",
+      "resolved": "https://registry.npmjs.org/expo-application/-/expo-application-57.0.2.tgz",
+      "integrity": "sha512-q31YwcXyymviAmdrtDfAg3Dld4VMxLCNAfgMHip7vZpPX4lzF/AfwsywqBJUAjQnJknzaNAkzqvMVjO5XmKYDA==",
+      "license": "MIT",
+      "peerDependencies": {
+        "expo": "*"
+      }
+    },
     "node_modules/expo-asset": {
       "version": "57.0.16",
       "resolved": "https://registry.npmjs.org/expo-asset/-/expo-asset-57.0.16.tgz",
@@ -5900,6 +5916,24 @@
         "react-native": "*"
       }
     },
+    "node_modules/expo-notifications": {
+      "version": "57.0.17",
+      "resolved": "https://registry.npmjs.org/expo-notifications/-/expo-notifications-57.0.17.tgz",
+      "integrity": "sha512-P/9ZqBOlFBVCZK3T5bhqORtWJhtVBcXQXe/MY1YWuKaxWgKvoGeEvD9ItWuo87jg2nD+eloVmFYqwdhhVCxPlA==",
+      "license": "MIT",
+      "dependencies": {
+        "@expo/image-utils": "^0.11.5",
+        "abort-controller": "^3.0.0",
+        "badgin": "^1.1.5",
+        "expo-application": "~57.0.2",
+        "expo-constants": "~57.0.17"
+      },
+      "peerDependencies": {
+        "expo": "*",
+        "react": "*",
+        "react-native": "*"
+      }
+    },
     "node_modules/expo-router": {
       "version": "5.1.11",
       "resolved": "https://registry.npmjs.org/expo-router/-/expo-router-5.1.11.tgz",
diff --git a/mobile/package.json b/mobile/package.json
index 648ee38..227ec93 100644
--- a/mobile/package.json
+++ b/mobile/package.json
@@ -18,6 +18,7 @@
     "expo-image": "~57.0.4",
     "expo-image-picker": "~57.0.16",
     "expo-linking": "~57.0.8",
+    "expo-notifications": "~57.0.17",
     "expo-router": "^5.1.11",
     "expo-secure-store": "~57.0.2",
     "expo-status-bar": "~57.0.1",
diff --git a/mobile/src/api/types.ts b/mobile/src/api/types.ts
index a096d10..63cb44d 100644
--- a/mobile/src/api/types.ts
+++ b/mobile/src/api/types.ts
@@ -1,7 +1,7 @@
 import type { inferRouterOutputs } from "@trpc/server";
 import type { AppRouter } from "../../../src/trpc/routers/_app";
 
-type RouterOutputs = inferRouterOutputs<AppRouter>;
+export type RouterOutputs = inferRouterOutputs<AppRouter>;
 
 export type Pet = RouterOutputs["pets"]["list"][number];
 export type FeedPost = RouterOutputs["feed"]["getFeed"]["posts"][number];
@@ -9,3 +9,5 @@ export type ExplorePet = RouterOutputs["explore"]["listPets"]["pets"][number];
 export type NotificationItem = RouterOutputs["notifications"]["list"]["notifications"][number];
 export type Conversation = RouterOutputs["conversations"]["list"][number];
 export type PostComment = RouterOutputs["comments"]["listByPost"]["comments"][number];
+export type ChatMessage = RouterOutputs["messages"]["list"]["messages"][number];
+export type MilestonePost = RouterOutputs["milestones"]["listByPet"][number];
diff --git a/mobile/src/components/health/HealthConsentGate.tsx b/mobile/src/components/health/HealthConsentGate.tsx
new file mode 100644
index 0000000..abacf03
--- /dev/null
+++ b/mobile/src/components/health/HealthConsentGate.tsx
@@ -0,0 +1,172 @@
+import { useState, type ReactNode } from "react";
+import { View, Text, Pressable, ActivityIndicator, Linking, Alert, StyleSheet } from "react-native";
+import { useMutation, useQuery, useQueryClient } from "@tanstack/react-query";
+import { useRouter } from "expo-router";
+import { HeartPulse, ShieldOff, Check } from "lucide-react-native";
+import { useTRPC } from "../../api/trpc";
+import { env } from "../../lib/env";
+import { Button } from "../Button";
+import { colors, radii, typography } from "../../theme/tokens";
+
+type Props = {
+  petId: string;
+  children: ReactNode;
+};
+
+/**
+ * Port of web's src/components/health/HealthConsentGate.tsx. Health-Tracking
+ * data (weight, vet visits, vaccines) is gated behind explicit, un-pre-checked
+ * consent per Art. 9 Abs. 2 lit. a DSGVO — this is the UI, health.ts's
+ * assertHealthConsent is the actual enforcement boundary. Text copied
+ * verbatim from messages/de.json's Health.consent namespace (mobile has no
+ * i18n system yet).
+ */
+export function HealthConsentGate({ petId, children }: Props) {
+  const trpc = useTRPC();
+  const queryClient = useQueryClient();
+  const router = useRouter();
+  const [checked, setChecked] = useState(false);
+
+  const { data: status, isLoading } = useQuery(trpc.health.getConsentStatus.queryOptions({ petId }));
+
+  const invalidateHealthQueries = () => {
+    queryClient.invalidateQueries({ queryKey: trpc.health.getConsentStatus.queryOptions({ petId }).queryKey });
+    queryClient.invalidateQueries({ queryKey: trpc.health.listWeightLogs.queryOptions({ petId }).queryKey });
+    queryClient.invalidateQueries({ queryKey: trpc.health.listVetVisits.queryOptions({ petId }).queryKey });
+    queryClient.invalidateQueries({ queryKey: trpc.health.listVaccines.queryOptions({ petId }).queryKey });
+  };
+
+  const giveMutation = useMutation(
+    trpc.health.giveConsent.mutationOptions({
+      onSuccess: invalidateHealthQueries,
+      onError: () => Alert.alert("Einwilligung konnte nicht gespeichert werden."),
+    })
+  );
+
+  const revokeMutation = useMutation(
+    trpc.health.revokeConsent.mutationOptions({
+      onSuccess: invalidateHealthQueries,
+      onError: () => Alert.alert("Einwilligung konnte nicht widerrufen werden."),
+    })
+  );
+
+  const confirmRevoke = () => {
+    Alert.alert(
+      "Einwilligung wirklich widerrufen?",
+      "Dadurch werden alle Gewichtseinträge, Tierarztbesuche und Impfungen dieses Haustiers unwiderruflich gelöscht.",
+      [
+        { text: "Abbrechen", style: "cancel" },
+        {
+          text: "Endgültig widerrufen und löschen",
+          style: "destructive",
+          onPress: () => revokeMutation.mutate({ petId }),
+        },
+      ]
+    );
+  };
+
+  if (isLoading) {
+    return (
+      <View style={styles.center}>
+        <ActivityIndicator color={colors.marigoldOrange} />
+      </View>
+    );
+  }
+
+  if (!status?.hasConsented) {
+    return (
+      <View style={styles.consentContainer}>
+        <View style={styles.titleRow}>
+          <HeartPulse color={colors.marigoldOrange} size={20} />
+          <Text style={styles.title}>Einwilligung für Gesundheitsdaten</Text>
+        </View>
+        <Text style={styles.subtitle}>
+          Bevor Sie den Health-Tracking-Bereich nutzen können, benötigen wir Ihre ausdrückliche Einwilligung zur
+          Verarbeitung der Gesundheitsdaten Ihres Haustiers.
+        </Text>
+
+        <Pressable style={styles.checkboxRow} onPress={() => setChecked((v) => !v)}>
+          <View style={[styles.checkbox, checked && styles.checkboxChecked]}>
+            {checked && <Check color={colors.pureWhite} size={14} />}
+          </View>
+          <Text style={styles.checkboxLabel}>
+            Ich willige ausdrücklich ein, dass Gesundheitsdaten meines Haustiers (Gewicht, Tierarztbesuche,
+            Impfungen) gespeichert und verarbeitet werden. Ich kann diese Einwilligung jederzeit widerrufen; danach
+            werden alle Gesundheitsdaten dieses Haustiers automatisch gelöscht.
+          </Text>
+        </Pressable>
+
+        <Pressable onPress={() => Linking.openURL(`${env.apiUrl}/datenschutz`)}>
+          <Text style={styles.privacyLink}>Weitere Informationen in unserer Datenschutzerklärung</Text>
+        </Pressable>
+
+        <View style={styles.ctaRow}>
+          <Button title="Abbrechen" variant="outline" style={styles.ctaButton} onPress={() => router.back()} />
+          <Button
+            title={giveMutation.isPending ? "…" : "Zustimmen und fortfahren"}
+            style={styles.ctaButton}
+            disabled={!checked || giveMutation.isPending}
+            onPress={() => giveMutation.mutate({ petId })}
+          />
+        </View>
+      </View>
+    );
+  }
+
+  return (
+    <>
+      {children}
+      <View style={styles.manageBox}>
+        <ShieldOff color={colors.alertRed} size={18} />
+        <View style={styles.manageText}>
+          <Text style={styles.manageTitle}>Einwilligung verwalten</Text>
+          <Text style={styles.manageDesc}>
+            Ein Widerruf löscht sofort und unwiderruflich alle Gesundheitsdaten dieses Haustiers.
+          </Text>
+        </View>
+        <Pressable onPress={confirmRevoke} disabled={revokeMutation.isPending}>
+          <Text style={styles.revokeLink}>Widerrufen</Text>
+        </Pressable>
+      </View>
+    </>
+  );
+}
+
+const styles = StyleSheet.create({
+  center: { flex: 1, alignItems: "center", justifyContent: "center", padding: 40 },
+  consentContainer: { padding: 20, gap: 4 },
+  titleRow: { flexDirection: "row", alignItems: "center", gap: 8, marginBottom: 4 },
+  title: { ...typography.title, fontSize: 18 },
+  subtitle: { ...typography.body, color: colors.quietGray, marginBottom: 16 },
+  checkboxRow: { flexDirection: "row", gap: 12, padding: 14, borderRadius: radii.xl, borderWidth: 1, borderColor: colors.hairlineGray, marginBottom: 16 },
+  checkbox: {
+    width: 20,
+    height: 20,
+    borderRadius: 5,
+    borderWidth: 1.5,
+    borderColor: colors.hairlineGray,
+    alignItems: "center",
+    justifyContent: "center",
+    marginTop: 2,
+  },
+  checkboxChecked: { backgroundColor: colors.marigoldOrange, borderColor: colors.marigoldOrange },
+  checkboxLabel: { ...typography.body, flex: 1, fontSize: 13, lineHeight: 19 },
+  privacyLink: { ...typography.label, textTransform: "none", letterSpacing: 0, color: colors.marigoldDeep, marginBottom: 20 },
+  ctaRow: { flexDirection: "row", gap: 10 },
+  ctaButton: { flex: 1 },
+  manageBox: {
+    flexDirection: "row",
+    alignItems: "flex-start",
+    gap: 10,
+    margin: 16,
+    padding: 14,
+    borderRadius: radii.xl,
+    borderWidth: 1,
+    borderColor: colors.alertRedTint,
+    backgroundColor: colors.alertRedTint,
+  },
+  manageText: { flex: 1 },
+  manageTitle: { ...typography.body, fontFamily: typography.title.fontFamily, fontSize: 13 },
+  manageDesc: { ...typography.label, textTransform: "none", letterSpacing: 0, marginTop: 2 },
+  revokeLink: { ...typography.body, color: colors.alertRed, fontFamily: typography.title.fontFamily, fontSize: 13 },
+});
diff --git a/mobile/src/components/health/VaccineSection.tsx b/mobile/src/components/health/VaccineSection.tsx
new file mode 100644
index 0000000..a91a5f0
--- /dev/null
+++ b/mobile/src/components/health/VaccineSection.tsx
@@ -0,0 +1,113 @@
+import { useState } from "react";
+import { View, Text, Pressable, ActivityIndicator, StyleSheet } from "react-native";
+import { useMutation, useQuery, useQueryClient } from "@tanstack/react-query";
+import { Plus, Trash2 } from "lucide-react-native";
+import { useTRPC } from "../../api/trpc";
+import { TextField } from "../TextField";
+import { Button } from "../Button";
+import { Card } from "../Card";
+import { colors, typography } from "../../theme/tokens";
+
+const today = () => new Date().toISOString().slice(0, 10);
+
+/** Port of web's health.ts vaccine CRUD — see health/page.tsx's Impfungen tab. */
+export function VaccineSection({ petId }: { petId: string }) {
+  const trpc = useTRPC();
+  const queryClient = useQueryClient();
+  const [showForm, setShowForm] = useState(false);
+  const [name, setName] = useState("");
+  const [dateGiven, setDateGiven] = useState(today());
+  const [nextDueDate, setNextDueDate] = useState("");
+  const [notes, setNotes] = useState("");
+
+  const { data: vaccines = [], isLoading } = useQuery(trpc.health.listVaccines.queryOptions({ petId }));
+
+  const invalidate = () =>
+    queryClient.invalidateQueries({ queryKey: trpc.health.listVaccines.queryOptions({ petId }).queryKey });
+
+  const addMutation = useMutation(
+    trpc.health.addVaccine.mutationOptions({
+      onSuccess: () => {
+        invalidate();
+        setShowForm(false);
+        setName("");
+        setNextDueDate("");
+        setNotes("");
+        setDateGiven(today());
+      },
+    })
+  );
+  const deleteMutation = useMutation(trpc.health.deleteVaccine.mutationOptions({ onSuccess: invalidate }));
+
+  const canSubmit = name.trim().length > 0 && dateGiven.length > 0 && !addMutation.isPending;
+  const isOverdue = (nextDue: string | null) => !!nextDue && new Date(nextDue).getTime() < Date.now();
+
+  return (
+    <View style={styles.section}>
+      <View style={styles.sectionHeader}>
+        <Text style={styles.sectionTitle}>Impfungen</Text>
+        <Pressable onPress={() => setShowForm((v) => !v)} hitSlop={8}>
+          <Plus color={colors.marigoldOrange} size={20} />
+        </Pressable>
+      </View>
+
+      {showForm && (
+        <Card style={styles.form}>
+          <TextField placeholder="Impfstoff, z.B. Tollwut, DHPP" value={name} onChangeText={setName} maxLength={100} />
+          <TextField placeholder="Gegeben am (JJJJ-MM-TT)" value={dateGiven} onChangeText={setDateGiven} />
+          <TextField placeholder="Nächste Fälligkeit (optional, JJJJ-MM-TT)" value={nextDueDate} onChangeText={setNextDueDate} />
+          <TextField placeholder="Notizen (optional)" value={notes} onChangeText={setNotes} maxLength={200} />
+          <Button
+            title={addMutation.isPending ? "…" : "Speichern"}
+            disabled={!canSubmit}
+            onPress={() =>
+              addMutation.mutate({
+                petId,
+                name: name.trim(),
+                dateGiven,
+                nextDueDate: nextDueDate.trim() || undefined,
+                notes: notes.trim() || undefined,
+              })
+            }
+          />
+        </Card>
+      )}
+
+      {isLoading ? (
+        <ActivityIndicator color={colors.marigoldOrange} />
+      ) : vaccines.length === 0 ? (
+        <Text style={styles.empty}>Noch keine Impfungen eingetragen</Text>
+      ) : (
+        vaccines.map((vaccine) => (
+          <View key={vaccine.id} style={styles.row}>
+            <View style={styles.rowText}>
+              <Text style={styles.rowPrimary}>{vaccine.name}</Text>
+              <Text style={styles.rowSecondary}>Gegeben {new Date(vaccine.dateGiven).toLocaleDateString("de-DE")}</Text>
+              {vaccine.nextDueDate && (
+                <Text style={[styles.rowSecondary, isOverdue(vaccine.nextDueDate) && styles.overdue]}>
+                  {isOverdue(vaccine.nextDueDate) ? "Überfällig" : `Fällig ${new Date(vaccine.nextDueDate).toLocaleDateString("de-DE")}`}
+                </Text>
+              )}
+            </View>
+            <Pressable onPress={() => deleteMutation.mutate({ id: vaccine.id, petId })} hitSlop={8}>
+              <Trash2 color={colors.quietGray} size={16} />
+            </Pressable>
+          </View>
+        ))
+      )}
+    </View>
+  );
+}
+
+const styles = StyleSheet.create({
+  section: { gap: 10 },
+  sectionHeader: { flexDirection: "row", alignItems: "center", justifyContent: "space-between" },
+  sectionTitle: { ...typography.title, fontSize: 16 },
+  form: { gap: 10 },
+  empty: { ...typography.body, color: colors.quietGray },
+  row: { flexDirection: "row", alignItems: "flex-start", justifyContent: "space-between", paddingVertical: 8, borderBottomWidth: 1, borderBottomColor: colors.hairlineGray },
+  rowText: { flex: 1, gap: 2 },
+  rowPrimary: { ...typography.body, fontFamily: typography.title.fontFamily },
+  rowSecondary: { ...typography.label, textTransform: "none", letterSpacing: 0 },
+  overdue: { color: colors.alertRed },
+});
diff --git a/mobile/src/components/health/VetVisitSection.tsx b/mobile/src/components/health/VetVisitSection.tsx
new file mode 100644
index 0000000..a3e0f82
--- /dev/null
+++ b/mobile/src/components/health/VetVisitSection.tsx
@@ -0,0 +1,111 @@
+import { useState } from "react";
+import { View, Text, Pressable, ActivityIndicator, StyleSheet } from "react-native";
+import { useMutation, useQuery, useQueryClient } from "@tanstack/react-query";
+import { Plus, Trash2 } from "lucide-react-native";
+import { useTRPC } from "../../api/trpc";
+import { TextField } from "../TextField";
+import { Button } from "../Button";
+import { Card } from "../Card";
+import { colors, typography } from "../../theme/tokens";
+
+const today = () => new Date().toISOString().slice(0, 10);
+
+/** Port of web's health.ts vetVisit CRUD — see health/page.tsx's Tierarzt tab. */
+export function VetVisitSection({ petId }: { petId: string }) {
+  const trpc = useTRPC();
+  const queryClient = useQueryClient();
+  const [showForm, setShowForm] = useState(false);
+  const [date, setDate] = useState(today());
+  const [reason, setReason] = useState("");
+  const [vetName, setVetName] = useState("");
+  const [notes, setNotes] = useState("");
+
+  const { data: visits = [], isLoading } = useQuery(trpc.health.listVetVisits.queryOptions({ petId }));
+
+  const invalidate = () =>
+    queryClient.invalidateQueries({ queryKey: trpc.health.listVetVisits.queryOptions({ petId }).queryKey });
+
+  const addMutation = useMutation(
+    trpc.health.addVetVisit.mutationOptions({
+      onSuccess: () => {
+        invalidate();
+        setShowForm(false);
+        setReason("");
+        setVetName("");
+        setNotes("");
+        setDate(today());
+      },
+    })
+  );
+  const deleteMutation = useMutation(trpc.health.deleteVetVisit.mutationOptions({ onSuccess: invalidate }));
+
+  const canSubmit = date.length > 0 && reason.trim().length > 0 && !addMutation.isPending;
+
+  return (
+    <View style={styles.section}>
+      <View style={styles.sectionHeader}>
+        <Text style={styles.sectionTitle}>Tierarzt</Text>
+        <Pressable onPress={() => setShowForm((v) => !v)} hitSlop={8}>
+          <Plus color={colors.marigoldOrange} size={20} />
+        </Pressable>
+      </View>
+
+      {showForm && (
+        <Card style={styles.form}>
+          <TextField placeholder="JJJJ-MM-TT" value={date} onChangeText={setDate} />
+          <TextField placeholder="Grund, z.B. Jahresuntersuchung" value={reason} onChangeText={setReason} maxLength={100} />
+          <TextField placeholder="Tierarzt / Klinik (optional)" value={vetName} onChangeText={setVetName} maxLength={100} />
+          <TextField placeholder="Notizen (optional)" value={notes} onChangeText={setNotes} maxLength={500} multiline />
+          <Button
+            title={addMutation.isPending ? "…" : "Speichern"}
+            disabled={!canSubmit}
+            onPress={() =>
+              addMutation.mutate({
+                petId,
+                date,
+                reason: reason.trim(),
+                vetName: vetName.trim() || undefined,
+                notes: notes.trim() || undefined,
+              })
+            }
+          />
+        </Card>
+      )}
+
+      {isLoading ? (
+        <ActivityIndicator color={colors.marigoldOrange} />
+      ) : visits.length === 0 ? (
+        <Text style={styles.empty}>Noch keine Tierarztbesuche</Text>
+      ) : (
+        visits.map((visit) => (
+          <View key={visit.id} style={styles.row}>
+            <View style={styles.rowText}>
+              <Text style={styles.rowPrimary}>{visit.reason}</Text>
+              <Text style={styles.rowSecondary}>
+                {new Date(visit.date).toLocaleDateString("de-DE")}
+                {visit.vetName ? ` · ${visit.vetName}` : ""}
+              </Text>
+              {visit.notes ? <Text style={styles.rowNotes}>{visit.notes}</Text> : null}
+            </View>
+            <Pressable onPress={() => deleteMutation.mutate({ id: visit.id, petId })} hitSlop={8}>
+              <Trash2 color={colors.quietGray} size={16} />
+            </Pressable>
+          </View>
+        ))
+      )}
+    </View>
+  );
+}
+
+const styles = StyleSheet.create({
+  section: { gap: 10 },
+  sectionHeader: { flexDirection: "row", alignItems: "center", justifyContent: "space-between" },
+  sectionTitle: { ...typography.title, fontSize: 16 },
+  form: { gap: 10 },
+  empty: { ...typography.body, color: colors.quietGray },
+  row: { flexDirection: "row", alignItems: "flex-start", justifyContent: "space-between", paddingVertical: 8, borderBottomWidth: 1, borderBottomColor: colors.hairlineGray },
+  rowText: { flex: 1, gap: 2 },
+  rowPrimary: { ...typography.body, fontFamily: typography.title.fontFamily },
+  rowSecondary: { ...typography.label, textTransform: "none", letterSpacing: 0 },
+  rowNotes: { ...typography.body, fontSize: 13, marginTop: 2 },
+});
diff --git a/mobile/src/components/health/WeightLogSection.tsx b/mobile/src/components/health/WeightLogSection.tsx
new file mode 100644
index 0000000..32046a3
--- /dev/null
+++ b/mobile/src/components/health/WeightLogSection.tsx
@@ -0,0 +1,99 @@
+import { useState } from "react";
+import { View, Text, Pressable, ActivityIndicator, StyleSheet } from "react-native";
+import { useMutation, useQuery, useQueryClient } from "@tanstack/react-query";
+import { Plus, Trash2 } from "lucide-react-native";
+import { useTRPC } from "../../api/trpc";
+import { TextField } from "../TextField";
+import { Button } from "../Button";
+import { Card } from "../Card";
+import { colors, typography } from "../../theme/tokens";
+
+const today = () => new Date().toISOString().slice(0, 10);
+
+/** Port of web's health.ts weightLog CRUD — see src/app/(app)/pets/[petId]/health/page.tsx's Gewicht tab. */
+export function WeightLogSection({ petId }: { petId: string }) {
+  const trpc = useTRPC();
+  const queryClient = useQueryClient();
+  const [showForm, setShowForm] = useState(false);
+  const [date, setDate] = useState(today());
+  const [weightKg, setWeightKg] = useState("");
+  const [notes, setNotes] = useState("");
+
+  const { data: logs = [], isLoading } = useQuery(trpc.health.listWeightLogs.queryOptions({ petId }));
+
+  const invalidate = () =>
+    queryClient.invalidateQueries({ queryKey: trpc.health.listWeightLogs.queryOptions({ petId }).queryKey });
+
+  const addMutation = useMutation(
+    trpc.health.addWeightLog.mutationOptions({
+      onSuccess: () => {
+        invalidate();
+        setShowForm(false);
+        setWeightKg("");
+        setNotes("");
+        setDate(today());
+      },
+    })
+  );
+  const deleteMutation = useMutation(trpc.health.deleteWeightLog.mutationOptions({ onSuccess: invalidate }));
+
+  const parsedWeight = Number(weightKg.replace(",", "."));
+  const canSubmit = date.length > 0 && parsedWeight > 0 && !addMutation.isPending;
+
+  return (
+    <View style={styles.section}>
+      <View style={styles.sectionHeader}>
+        <Text style={styles.sectionTitle}>Gewicht</Text>
+        <Pressable onPress={() => setShowForm((v) => !v)} hitSlop={8}>
+          <Plus color={colors.marigoldOrange} size={20} />
+        </Pressable>
+      </View>
+
+      {showForm && (
+        <Card style={styles.form}>
+          <TextField placeholder="JJJJ-MM-TT" value={date} onChangeText={setDate} />
+          <TextField placeholder="Gewicht (kg), z.B. 4,2" value={weightKg} onChangeText={setWeightKg} keyboardType="decimal-pad" />
+          <TextField placeholder="Notizen (optional)" value={notes} onChangeText={setNotes} maxLength={200} />
+          <Button
+            title={addMutation.isPending ? "…" : "Speichern"}
+            disabled={!canSubmit}
+            onPress={() => addMutation.mutate({ petId, date, weightKg: parsedWeight, notes: notes.trim() || undefined })}
+          />
+        </Card>
+      )}
+
+      {isLoading ? (
+        <ActivityIndicator color={colors.marigoldOrange} />
+      ) : logs.length === 0 ? (
+        <Text style={styles.empty}>Noch keine Gewichtseinträge</Text>
+      ) : (
+        logs.map((log) => (
+          <View key={log.id} style={styles.row}>
+            <View style={styles.rowText}>
+              <Text style={styles.rowPrimary}>{(log.weightGrams / 1000).toLocaleString("de-DE")} kg</Text>
+              <Text style={styles.rowSecondary}>
+                {new Date(log.date).toLocaleDateString("de-DE")}
+                {log.notes ? ` · ${log.notes}` : ""}
+              </Text>
+            </View>
+            <Pressable onPress={() => deleteMutation.mutate({ id: log.id, petId })} hitSlop={8}>
+              <Trash2 color={colors.quietGray} size={16} />
+            </Pressable>
+          </View>
+        ))
+      )}
+    </View>
+  );
+}
+
+const styles = StyleSheet.create({
+  section: { gap: 10 },
+  sectionHeader: { flexDirection: "row", alignItems: "center", justifyContent: "space-between" },
+  sectionTitle: { ...typography.title, fontSize: 16 },
+  form: { gap: 10 },
+  empty: { ...typography.body, color: colors.quietGray },
+  row: { flexDirection: "row", alignItems: "center", justifyContent: "space-between", paddingVertical: 8, borderBottomWidth: 1, borderBottomColor: colors.hairlineGray },
+  rowText: { flex: 1, gap: 2 },
+  rowPrimary: { ...typography.body, fontFamily: typography.title.fontFamily },
+  rowSecondary: { ...typography.label, textTransform: "none", letterSpacing: 0 },
+});
diff --git a/mobile/src/hooks/usePushNotifications.ts b/mobile/src/hooks/usePushNotifications.ts
new file mode 100644
index 0000000..4b5541e
--- /dev/null
+++ b/mobile/src/hooks/usePushNotifications.ts
@@ -0,0 +1,73 @@
+import { useEffect } from "react";
+import { Platform } from "react-native";
+import * as Notifications from "expo-notifications";
+import Constants from "expo-constants";
+import { useMutation } from "@tanstack/react-query";
+import { useAuth } from "@clerk/expo";
+import { useTRPC } from "../api/trpc";
+
+Notifications.setNotificationHandler({
+  handleNotification: async () => ({
+    shouldShowAlert: true,
+    shouldPlaySound: true,
+    shouldSetBadge: false,
+    shouldShowBanner: true,
+    shouldShowList: true,
+  }),
+});
+
+/**
+ * Requests notification permission, mints this device's Expo push token, and
+ * registers it with the backend (owner.registerPushToken) so server-side
+ * events (messages, follows, reactions, ...) can push to this device — see
+ * src/lib/notify.ts on the web side, which sends through Expo's push API.
+ *
+ * Minting a real token needs an EAS project id (app.json's
+ * extra.eas.projectId, set once via `eas init` — a free step, no EAS Build
+ * required). Until that's set up, this no-ops with a console warning rather
+ * than crashing: push delivery is best-effort everywhere else in this stack
+ * (a missing/expired token just means notify.ts silently skips the push).
+ */
+export function usePushNotifications(): void {
+  const trpc = useTRPC();
+  const { isSignedIn } = useAuth();
+  const registerMutation = useMutation(trpc.owner.registerPushToken.mutationOptions());
+
+  useEffect(() => {
+    if (!isSignedIn || Platform.OS === "web") return;
+    let cancelled = false;
+
+    async function register() {
+      if (Platform.OS === "android") {
+        await Notifications.setNotificationChannelAsync("default", {
+          name: "default",
+          importance: Notifications.AndroidImportance.DEFAULT,
+        });
+      }
+
+      const permission = await Notifications.requestPermissionsAsync();
+      if (permission.status !== "granted") return;
+
+      const projectId = Constants.expoConfig?.extra?.eas?.projectId;
+      if (!projectId) {
+        console.warn(
+          "[push] No EAS project id configured (app.json extra.eas.projectId) — run `eas init` once to enable real push tokens."
+        );
+        return;
+      }
+
+      try {
+        const { data: token } = await Notifications.getExpoPushTokenAsync({ projectId });
+        if (!cancelled) registerMutation.mutate({ expoPushToken: token });
+      } catch (err) {
+        console.warn("[push] Failed to get Expo push token", err);
+      }
+    }
+
+    register();
+    return () => {
+      cancelled = true;
+    };
+    // eslint-disable-next-line react-hooks/exhaustive-deps
+  }, [isSignedIn]);
+}
diff --git a/mobile/src/lib/milestone-meta.ts b/mobile/src/lib/milestone-meta.ts
new file mode 100644
index 0000000..685e0eb
--- /dev/null
+++ b/mobile/src/lib/milestone-meta.ts
@@ -0,0 +1,55 @@
+import { Cake, Heart, Leaf, Stethoscope, Milk, Trophy, Star, Award, type LucideIcon } from "lucide-react-native";
+
+export type MilestoneType =
+  | "BIRTHDAY"
+  | "ADOPTION_DAY"
+  | "FIRST_OUTING"
+  | "VET_VISIT"
+  | "LITTER"
+  | "FOLLOWERS_500"
+  | "FOLLOWERS_1K"
+  | "FOLLOWERS_2_5K"
+  | "FOLLOWERS_5K"
+  | "FOLLOWERS_10K"
+  | "FOLLOWERS_25K"
+  | "FOLLOWERS_50K"
+  | "FOLLOWERS_100K"
+  | "FOLLOWERS_250K"
+  | "FOLLOWERS_500K"
+  | "FOLLOWERS_1M";
+
+interface MilestoneMeta {
+  label: string;
+  icon: LucideIcon;
+}
+
+/** Port of web's src/lib/milestone-meta.ts, German labels (mobile has no i18n system yet). */
+export const MILESTONE_META: Record<MilestoneType, MilestoneMeta> = {
+  BIRTHDAY: { label: "Geburtstag", icon: Cake },
+  ADOPTION_DAY: { label: "Adoptionstag", icon: Heart },
+  FIRST_OUTING: { label: "Erster Ausflug", icon: Leaf },
+  VET_VISIT: { label: "Tierarztbesuch", icon: Stethoscope },
+  LITTER: { label: "Neuer Wurf", icon: Milk },
+  FOLLOWERS_500: { label: "500 Follower", icon: Trophy },
+  FOLLOWERS_1K: { label: "1.000 Follower", icon: Trophy },
+  FOLLOWERS_2_5K: { label: "2.500 Follower", icon: Trophy },
+  FOLLOWERS_5K: { label: "5.000 Follower", icon: Trophy },
+  FOLLOWERS_10K: { label: "10.000 Follower", icon: Star },
+  FOLLOWERS_25K: { label: "25.000 Follower", icon: Star },
+  FOLLOWERS_50K: { label: "50.000 Follower", icon: Star },
+  FOLLOWERS_100K: { label: "100.000 Follower", icon: Star },
+  FOLLOWERS_250K: { label: "250.000 Follower", icon: Award },
+  FOLLOWERS_500K: { label: "500.000 Follower", icon: Award },
+  FOLLOWERS_1M: { label: "1.000.000 Follower", icon: Award },
+};
+
+/** The 5 user-initiated types shown in the creation picker — follower-threshold types are auto-triggered server-side. */
+export const USER_INITIATED_MILESTONE_TYPES = [
+  "BIRTHDAY",
+  "ADOPTION_DAY",
+  "FIRST_OUTING",
+  "VET_VISIT",
+  "LITTER",
+] as const;
+
+export type CreatableMilestoneType = (typeof USER_INITIATED_MILESTONE_TYPES)[number];