diff --git a/mobile/package.json b/mobile/package.json
index 9d66794..e528fdb 100644
--- a/mobile/package.json
+++ b/mobile/package.json
@@ -28,6 +28,7 @@
     "@bytelyst/survey-client": "^0.1.0",
     "@bytelyst/telemetry-client": "^0.1.0",
     "expo": "~55.0.4",
+    "expo-constants": "~18.0.13",
     "expo-router": "~6.0.4",
     "expo-status-bar": "~3.0.9",
     "react": "19.2.0",
diff --git a/mobile/src/app/(tabs)/_layout.tsx b/mobile/src/app/(tabs)/_layout.tsx
index 4477ae2..f9f218b 100644
--- a/mobile/src/app/(tabs)/_layout.tsx
+++ b/mobile/src/app/(tabs)/_layout.tsx
@@ -3,11 +3,11 @@ import { Tabs } from 'expo-router';
 export default function TabLayout() {
   return (
     <Tabs screenOptions={{ headerShown: false }}>
-      <Tabs.Screen name="index" options={{ title: 'Home' }} />
-      <Tabs.Screen name="search" options={{ title: 'Search' }} />
-      <Tabs.Screen name="capture" options={{ title: 'Capture' }} />
-      <Tabs.Screen name="inbox" options={{ title: 'Inbox' }} />
-      <Tabs.Screen name="settings" options={{ title: 'Settings' }} />
+      <Tabs.Screen name="index" options={{ title: 'Home', tabBarAccessibilityLabel: 'Home tab' }} />
+      <Tabs.Screen name="search" options={{ title: 'Search', tabBarAccessibilityLabel: 'Search tab' }} />
+      <Tabs.Screen name="capture" options={{ title: 'Capture', tabBarAccessibilityLabel: 'Capture tab' }} />
+      <Tabs.Screen name="inbox" options={{ title: 'Inbox', tabBarAccessibilityLabel: 'Inbox tab' }} />
+      <Tabs.Screen name="settings" options={{ title: 'Settings', tabBarAccessibilityLabel: 'Settings tab' }} />
     </Tabs>
   );
 }
diff --git a/mobile/src/app/(tabs)/capture.tsx b/mobile/src/app/(tabs)/capture.tsx
index c1afe3c..188f9e7 100644
--- a/mobile/src/app/(tabs)/capture.tsx
+++ b/mobile/src/app/(tabs)/capture.tsx
@@ -64,6 +64,7 @@ export default function CaptureScreen() {
         textAlignVertical="top"
       />
       <Pressable
+        accessibilityLabel={activeWorkspaceId ? 'Save draft note' : 'Select workspace before saving'}
         onPress={async () => {
           const didSave = await saveDraft(activeWorkspaceId, title, body);
           setSaved(didSave);
diff --git a/mobile/src/app/(tabs)/inbox.tsx b/mobile/src/app/(tabs)/inbox.tsx
index a212df8..8645e30 100644
--- a/mobile/src/app/(tabs)/inbox.tsx
+++ b/mobile/src/app/(tabs)/inbox.tsx
@@ -40,6 +40,7 @@ export default function InboxScreen() {
           <Text style={styles.status}>Status: {item.status}</Text>
           <View style={styles.actionRow}>
             <Pressable
+              accessibilityLabel={`Approve ${item.title}`}
               style={[
                 styles.approveButton,
                 pendingApprovalId === item.id || item.status !== 'pending' ? styles.buttonDisabled : null,
@@ -61,6 +62,7 @@ export default function InboxScreen() {
               </Text>
             </Pressable>
             <Pressable
+              accessibilityLabel={`Reject ${item.title}`}
               style={[
                 styles.rejectButton,
                 pendingApprovalId === item.id || item.status !== 'pending' ? styles.buttonDisabled : null,
diff --git a/mobile/src/app/auth.tsx b/mobile/src/app/auth.tsx
index cd7556b..c8bbb98 100644
--- a/mobile/src/app/auth.tsx
+++ b/mobile/src/app/auth.tsx
@@ -63,6 +63,7 @@ export default function AuthScreen() {
       />
       {errorMessage ? <Text style={styles.errorText}>{errorMessage}</Text> : null}
       <Pressable
+        accessibilityLabel={mode === 'signin' ? 'Sign in' : 'Register account'}
         onPress={async () => {
           const didAuthenticate =
             mode === 'signin'
@@ -87,6 +88,7 @@ export default function AuthScreen() {
         </Text>
       </Pressable>
       <Pressable
+        accessibilityLabel={mode === 'signin' ? 'Switch to register mode' : 'Switch to sign in mode'}
         onPress={() => {
           setErrorMessage(null);
           setMode((current) => (current === 'signin' ? 'register' : 'signin'));
diff --git a/mobile/src/lib/app-metadata.ts b/mobile/src/lib/app-metadata.ts
new file mode 100644
index 0000000..246e108
--- /dev/null
+++ b/mobile/src/lib/app-metadata.ts
@@ -0,0 +1,12 @@
+import Constants from 'expo-constants';
+import { Platform } from 'react-native';
+
+export const APP_PLATFORM: 'ios' | 'android' = Platform.OS === 'android' ? 'android' : 'ios';
+
+export const APP_VERSION = Constants.expoConfig?.version ?? '0.1.0';
+
+export const BUILD_NUMBER =
+  Constants.expoConfig?.ios?.buildNumber ??
+  (Constants.expoConfig?.android?.versionCode ? String(Constants.expoConfig.android.versionCode) : '1');
+
+export const OS_VERSION = typeof Platform.Version === 'string' ? Platform.Version : String(Platform.Version ?? 'unknown');
diff --git a/mobile/src/lib/broadcast-client.ts b/mobile/src/lib/broadcast-client.ts
index 7d9a7bf..2b93137 100644
--- a/mobile/src/lib/broadcast-client.ts
+++ b/mobile/src/lib/broadcast-client.ts
@@ -1,6 +1,7 @@
 import { createBroadcastClient, type BroadcastClient } from '@bytelyst/broadcast-client';
 import { API_CONFIG, PRODUCT_ID } from '../api/config';
 import { getAuthClient } from '../api/auth';
+import { APP_PLATFORM, APP_VERSION, OS_VERSION } from './app-metadata';
 
 let broadcastClient: BroadcastClient | null = null;
 
@@ -10,9 +11,9 @@ export function getBroadcastClient(): BroadcastClient {
       baseUrl: API_CONFIG.platformBaseUrl,
       productId: PRODUCT_ID,
       getAuthToken: () => getAuthClient().getAccessToken() ?? '',
-      platform: 'ios',
-      appVersion: '0.1.0',
-      osVersion: 'unknown',
+      platform: APP_PLATFORM,
+      appVersion: APP_VERSION,
+      osVersion: OS_VERSION,
     });
   }
 
diff --git a/mobile/src/lib/platform.ts b/mobile/src/lib/platform.ts
index b28e368..32bdb5f 100644
--- a/mobile/src/lib/platform.ts
+++ b/mobile/src/lib/platform.ts
@@ -5,6 +5,7 @@ import { createBlobClient } from '@bytelyst/blob-client';
 import { DiagnosticsClient } from '@bytelyst/diagnostics-client';
 import { API_CONFIG, PRODUCT_ID } from '../api/config';
 import { mmkvStorage } from '../store/mmkv-storage';
+import { APP_VERSION, BUILD_NUMBER, OS_VERSION } from './app-metadata';
 
 function getAccessToken(): string | null {
   return mmkvStorage.getItem(`${PRODUCT_ID}_access_token`);
@@ -17,10 +18,10 @@ export const telemetryClient = createTelemetryClient({
   platform: 'mobile',
   channel: 'notelett_mobile',
   transport: 'fetch',
-  appVersion: '0.1.0',
-  buildNumber: '1',
+  appVersion: APP_VERSION,
+  buildNumber: BUILD_NUMBER,
   releaseChannel: 'dev',
-  osFamily: 'other',
+  osFamily: OS_VERSION,
 });
 
 export const featureFlagClient = createFeatureFlagClient({
@@ -54,9 +55,9 @@ export function getDiagnosticsClient() {
     platform: 'mobile',
     channel: 'notelett_mobile',
     anonymousInstallId: mmkvStorage.getItem(`${PRODUCT_ID}_install_id`) ?? 'unknown',
-    osFamily: 'other',
-    appVersion: '0.1.0',
-    buildNumber: '1',
+    osFamily: OS_VERSION,
+    appVersion: APP_VERSION,
+    buildNumber: BUILD_NUMBER,
     releaseChannel: 'dev',
     getAuthToken: () => getAccessToken() ?? '',
   });
diff --git a/mobile/src/lib/survey-client.ts b/mobile/src/lib/survey-client.ts
index c195401..aab844f 100644
--- a/mobile/src/lib/survey-client.ts
+++ b/mobile/src/lib/survey-client.ts
@@ -1,6 +1,7 @@
 import { createSurveyClient, type SurveyClient } from '@bytelyst/survey-client';
 import { API_CONFIG, PRODUCT_ID } from '../api/config';
 import { getAuthClient } from '../api/auth';
+import { APP_PLATFORM, APP_VERSION, OS_VERSION } from './app-metadata';
 
 let surveyClient: SurveyClient | null = null;
 
@@ -10,9 +11,9 @@ export function getSurveyClient(): SurveyClient {
       baseUrl: API_CONFIG.platformBaseUrl,
       productId: PRODUCT_ID,
       getAuthToken: () => getAuthClient().getAccessToken() ?? '',
-      platform: 'ios',
-      appVersion: '0.1.0',
-      osVersion: 'unknown',
+      platform: APP_PLATFORM,
+      appVersion: APP_VERSION,
+      osVersion: OS_VERSION,
     });
   }
 
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index e1f67bb..fd71078 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -126,9 +126,12 @@ importers:
       expo:
         specifier: ~55.0.4
         version: 55.0.8(@babel/core@7.29.0)(@expo/dom-webview@55.0.3)(expo-router@6.0.23)(react-dom@19.2.0(react@19.2.0))(react-native@0.83.2(@babel/core@7.29.0)(@react-native/metro-config@0.84.1(@babel/core@7.29.0))(@types/react@19.2.14)(react@19.2.0))(react@19.2.0)(typescript@5.9.3)
+      expo-constants:
+        specifier: ~18.0.13
+        version: 18.0.13(expo@55.0.8)(react-native@0.83.2(@babel/core@7.29.0)(@react-native/metro-config@0.84.1(@babel/core@7.29.0))(@types/react@19.2.14)(react@19.2.0))
       expo-router:
         specifier: ~6.0.4
-        version: 6.0.23(fbac16d1b6e18492193348f9e089f0a0)
+        version: 6.0.23(8f4d8b3ea945913a36065f8394178341)
       expo-status-bar:
         specifier: ~3.0.9
         version: 3.0.9(react-native@0.83.2(@babel/core@7.29.0)(@react-native/metro-config@0.84.1(@babel/core@7.29.0))(@types/react@19.2.14)(react@19.2.0))(react@19.2.0)
@@ -7335,7 +7338,7 @@ snapshots:
 
   '@exodus/bytes@1.15.0': {}
 
-  '@expo/cli@55.0.18(@expo/dom-webview@55.0.3)(expo-constants@55.0.9)(expo-font@55.0.4(expo@55.0.8)(react-native@0.83.2(@babel/core@7.29.0)(@react-native/metro-config@0.84.1(@babel/core@7.29.0))(@types/react@19.2.14)(react@19.2.0))(react@19.2.0))(expo-router@6.0.23)(expo@55.0.8)(react-dom@19.2.0(react@19.2.0))(react-native@0.83.2(@babel/core@7.29.0)(@react-native/metro-config@0.84.1(@babel/core@7.29.0))(@types/react@19.2.14)(react@19.2.0))(react@19.2.0)(typescript@5.9.3)':
+  '@expo/cli@55.0.18(@expo/dom-webview@55.0.3)(expo-constants@55.0.9(expo@55.0.8)(react-native@0.83.2(@babel/core@7.29.0)(@react-native/metro-config@0.84.1(@babel/core@7.29.0))(@types/react@19.2.14)(react@19.2.0))(typescript@5.9.3))(expo-font@55.0.4(expo@55.0.8)(react-native@0.83.2(@babel/core@7.29.0)(@react-native/metro-config@0.84.1(@babel/core@7.29.0))(@types/react@19.2.14)(react@19.2.0))(react@19.2.0))(expo-router@6.0.23)(expo@55.0.8)(react-dom@19.2.0(react@19.2.0))(react-native@0.83.2(@babel/core@7.29.0)(@react-native/metro-config@0.84.1(@babel/core@7.29.0))(@types/react@19.2.14)(react@19.2.0))(react@19.2.0)(typescript@5.9.3)':
     dependencies:
       '@expo/code-signing-certificates': 0.0.6
       '@expo/config': 55.0.10(typescript@5.9.3)
@@ -7352,7 +7355,7 @@ snapshots:
       '@expo/plist': 0.5.2
       '@expo/prebuild-config': 55.0.10(expo@55.0.8)(typescript@5.9.3)
       '@expo/require-utils': 55.0.3(typescript@5.9.3)
-      '@expo/router-server': 55.0.11(expo-constants@55.0.9)(expo-font@55.0.4(expo@55.0.8)(react-native@0.83.2(@babel/core@7.29.0)(@react-native/metro-config@0.84.1(@babel/core@7.29.0))(@types/react@19.2.14)(react@19.2.0))(react@19.2.0))(expo-router@6.0.23)(expo-server@55.0.6)(expo@55.0.8)(react-dom@19.2.0(react@19.2.0))(react@19.2.0)
+      '@expo/router-server': 55.0.11(expo-constants@55.0.9(expo@55.0.8)(react-native@0.83.2(@babel/core@7.29.0)(@react-native/metro-config@0.84.1(@babel/core@7.29.0))(@types/react@19.2.14)(react@19.2.0))(typescript@5.9.3))(expo-font@55.0.4(expo@55.0.8)(react-native@0.83.2(@babel/core@7.29.0)(@react-native/metro-config@0.84.1(@babel/core@7.29.0))(@types/react@19.2.14)(react@19.2.0))(react@19.2.0))(expo-router@6.0.23)(expo-server@55.0.6)(expo@55.0.8)(react-dom@19.2.0(react@19.2.0))(react@19.2.0)
       '@expo/schema-utils': 55.0.2
       '@expo/spawn-async': 1.7.2
       '@expo/ws-tunnel': 1.0.6
@@ -7396,7 +7399,7 @@ snapshots:
       ws: 8.20.0
       zod: 3.25.76
     optionalDependencies:
-      expo-router: 6.0.23(fbac16d1b6e18492193348f9e089f0a0)
+      expo-router: 6.0.23(8f4d8b3ea945913a36065f8394178341)
       react-native: 0.83.2(@babel/core@7.29.0)(@react-native/metro-config@0.84.1(@babel/core@7.29.0))(@types/react@19.2.14)(react@19.2.0)
     transitivePeerDependencies:
       - '@expo/dom-webview'
@@ -7679,7 +7682,7 @@ snapshots:
     transitivePeerDependencies:
       - supports-color
 
-  '@expo/router-server@55.0.11(expo-constants@55.0.9)(expo-font@55.0.4(expo@55.0.8)(react-native@0.83.2(@babel/core@7.29.0)(@react-native/metro-config@0.84.1(@babel/core@7.29.0))(@types/react@19.2.14)(react@19.2.0))(react@19.2.0))(expo-router@6.0.23)(expo-server@55.0.6)(expo@55.0.8)(react-dom@19.2.0(react@19.2.0))(react@19.2.0)':
+  '@expo/router-server@55.0.11(expo-constants@55.0.9(expo@55.0.8)(react-native@0.83.2(@babel/core@7.29.0)(@react-native/metro-config@0.84.1(@babel/core@7.29.0))(@types/react@19.2.14)(react@19.2.0))(typescript@5.9.3))(expo-font@55.0.4(expo@55.0.8)(react-native@0.83.2(@babel/core@7.29.0)(@react-native/metro-config@0.84.1(@babel/core@7.29.0))(@types/react@19.2.14)(react@19.2.0))(react@19.2.0))(expo-router@6.0.23)(expo-server@55.0.6)(expo@55.0.8)(react-dom@19.2.0(react@19.2.0))(react@19.2.0)':
     dependencies:
       debug: 4.4.3
       expo: 55.0.8(@babel/core@7.29.0)(@expo/dom-webview@55.0.3)(expo-router@6.0.23)(react-dom@19.2.0(react@19.2.0))(react-native@0.83.2(@babel/core@7.29.0)(@react-native/metro-config@0.84.1(@babel/core@7.29.0))(@types/react@19.2.14)(react@19.2.0))(react@19.2.0)(typescript@5.9.3)
@@ -7688,7 +7691,7 @@ snapshots:
       expo-server: 55.0.6
       react: 19.2.0
     optionalDependencies:
-      expo-router: 6.0.23(fbac16d1b6e18492193348f9e089f0a0)
+      expo-router: 6.0.23(8f4d8b3ea945913a36065f8394178341)
       react-dom: 19.2.0(react@19.2.0)
     transitivePeerDependencies:
       - supports-color
@@ -8409,9 +8412,7 @@ snapshots:
       metro-runtime: 0.83.5
     transitivePeerDependencies:
       - '@babel/core'
-      - bufferutil
       - supports-color
-      - utf-8-validate
 
   '@react-native/normalize-colors@0.83.2': {}
 
@@ -10365,7 +10366,7 @@ snapshots:
       react: 19.2.0
       react-native: 0.83.2(@babel/core@7.29.0)(@react-native/metro-config@0.84.1(@babel/core@7.29.0))(@types/react@19.2.14)(react@19.2.0)
 
-  expo-router@6.0.23(fbac16d1b6e18492193348f9e089f0a0):
+  expo-router@6.0.23(8f4d8b3ea945913a36065f8394178341):
     dependencies:
       '@expo/schema-utils': 0.1.8
       '@radix-ui/react-slot': 1.2.0(@types/react@19.2.14)(react@19.2.0)
@@ -10377,7 +10378,7 @@ snapshots:
       debug: 4.4.3
       escape-string-regexp: 4.0.0
       expo: 55.0.8(@babel/core@7.29.0)(@expo/dom-webview@55.0.3)(expo-router@6.0.23)(react-dom@19.2.0(react@19.2.0))(react-native@0.83.2(@babel/core@7.29.0)(@react-native/metro-config@0.84.1(@babel/core@7.29.0))(@types/react@19.2.14)(react@19.2.0))(react@19.2.0)(typescript@5.9.3)
-      expo-constants: 55.0.9(expo@55.0.8)(react-native@0.83.2(@babel/core@7.29.0)(@react-native/metro-config@0.84.1(@babel/core@7.29.0))(@types/react@19.2.14)(react@19.2.0))(typescript@5.9.3)
+      expo-constants: 18.0.13(expo@55.0.8)(react-native@0.83.2(@babel/core@7.29.0)(@react-native/metro-config@0.84.1(@babel/core@7.29.0))(@types/react@19.2.14)(react@19.2.0))
       expo-linking: 8.0.11(expo@55.0.8)(react-native@0.83.2(@babel/core@7.29.0)(@react-native/metro-config@0.84.1(@babel/core@7.29.0))(@types/react@19.2.14)(react@19.2.0))(react@19.2.0)
       expo-server: 1.0.5
       fast-deep-equal: 3.1.3
@@ -10419,7 +10420,7 @@ snapshots:
   expo@55.0.8(@babel/core@7.29.0)(@expo/dom-webview@55.0.3)(expo-router@6.0.23)(react-dom@19.2.0(react@19.2.0))(react-native@0.83.2(@babel/core@7.29.0)(@react-native/metro-config@0.84.1(@babel/core@7.29.0))(@types/react@19.2.14)(react@19.2.0))(react@19.2.0)(typescript@5.9.3):
     dependencies:
       '@babel/runtime': 7.29.2
-      '@expo/cli': 55.0.18(@expo/dom-webview@55.0.3)(expo-constants@55.0.9)(expo-font@55.0.4(expo@55.0.8)(react-native@0.83.2(@babel/core@7.29.0)(@react-native/metro-config@0.84.1(@babel/core@7.29.0))(@types/react@19.2.14)(react@19.2.0))(react@19.2.0))(expo-router@6.0.23)(expo@55.0.8)(react-dom@19.2.0(react@19.2.0))(react-native@0.83.2(@babel/core@7.29.0)(@react-native/metro-config@0.84.1(@babel/core@7.29.0))(@types/react@19.2.14)(react@19.2.0))(react@19.2.0)(typescript@5.9.3)
+      '@expo/cli': 55.0.18(@expo/dom-webview@55.0.3)(expo-constants@55.0.9(expo@55.0.8)(react-native@0.83.2(@babel/core@7.29.0)(@react-native/metro-config@0.84.1(@babel/core@7.29.0))(@types/react@19.2.14)(react@19.2.0))(typescript@5.9.3))(expo-font@55.0.4(expo@55.0.8)(react-native@0.83.2(@babel/core@7.29.0)(@react-native/metro-config@0.84.1(@babel/core@7.29.0))(@types/react@19.2.14)(react@19.2.0))(react@19.2.0))(expo-router@6.0.23)(expo@55.0.8)(react-dom@19.2.0(react@19.2.0))(react-native@0.83.2(@babel/core@7.29.0)(@react-native/metro-config@0.84.1(@babel/core@7.29.0))(@types/react@19.2.14)(react@19.2.0))(react@19.2.0)(typescript@5.9.3)
       '@expo/config': 55.0.10(typescript@5.9.3)
       '@expo/config-plugins': 55.0.7
       '@expo/devtools': 55.0.2(react-native@0.83.2(@babel/core@7.29.0)(@react-native/metro-config@0.84.1(@babel/core@7.29.0))(@types/react@19.2.14)(react@19.2.0))(react@19.2.0)