diff --git a/native/account/log-in-panel.react.js b/native/account/log-in-panel.react.js
--- a/native/account/log-in-panel.react.js
+++ b/native/account/log-in-panel.react.js
@@ -43,6 +43,7 @@
 import { useSelector } from '../redux/redux-utils.js';
 import { nativeLogInExtraInfoSelector } from '../selectors/account-selectors.js';
 import type { KeyPressEvent } from '../types/react-native.js';
+import { AppOutOfDateAlertDetails } from '../utils/alert-messages.js';
 import Alert from '../utils/alert.js';
 import { useInitialNotificationsEncryptedMessage } from '../utils/crypto-utils.js';
 import type { StateContainer } from '../utils/state-container.js';
@@ -270,14 +271,9 @@
           { cancelable: false },
         );
       } else if (e.message === 'client_version_unsupported') {
-        const app = Platform.select({
-          ios: 'App Store',
-          android: 'Play Store',
-        });
         Alert.alert(
-          'App out of date',
-          'Your app version is pretty old, and the server doesn’t know how ' +
-            `to speak to it anymore. Please use the ${app} app to update!`,
+          AppOutOfDateAlertDetails.title,
+          AppOutOfDateAlertDetails.message,
           [{ text: 'OK', onPress: this.onAppOutOfDateAlertAcknowledged }],
           { cancelable: false },
         );
diff --git a/native/account/register-panel.react.js b/native/account/register-panel.react.js
--- a/native/account/register-panel.react.js
+++ b/native/account/register-panel.react.js
@@ -46,6 +46,7 @@
 import { useSelector } from '../redux/redux-utils.js';
 import { nativeLogInExtraInfoSelector } from '../selectors/account-selectors.js';
 import type { KeyPressEvent } from '../types/react-native.js';
+import { AppOutOfDateAlertDetails } from '../utils/alert-messages.js';
 import Alert from '../utils/alert.js';
 import { useInitialNotificationsEncryptedMessage } from '../utils/crypto-utils.js';
 import { type StateContainer } from '../utils/state-container.js';
@@ -379,14 +380,9 @@
           { cancelable: false },
         );
       } else if (e.message === 'client_version_unsupported') {
-        const app = Platform.select({
-          ios: 'App Store',
-          android: 'Play Store',
-        });
         Alert.alert(
-          'App out of date',
-          'Your app version is pretty old, and the server doesn’t know how ' +
-            `to speak to it anymore. Please use the ${app} app to update!`,
+          AppOutOfDateAlertDetails.title,
+          AppOutOfDateAlertDetails.message,
           [{ text: 'OK', onPress: this.onAppOutOfDateAlertAcknowledged }],
           { cancelable: false },
         );
diff --git a/native/account/registration/registration-server-call.js b/native/account/registration/registration-server-call.js
--- a/native/account/registration/registration-server-call.js
+++ b/native/account/registration/registration-server-call.js
@@ -1,7 +1,6 @@
 // @flow
 
 import * as React from 'react';
-import { Platform } from 'react-native';
 import { useDispatch } from 'react-redux';
 
 import { setDataLoadedActionType } from 'lib/actions/client-db-store-actions.js';
@@ -25,6 +24,7 @@
 import { NavContext } from '../../navigation/navigation-context.js';
 import { useSelector } from '../../redux/redux-utils.js';
 import { nativeLogInExtraInfoSelector } from '../../selectors/account-selectors.js';
+import { AppOutOfDateAlertDetails } from '../../utils/alert-messages.js';
 import Alert from '../../utils/alert.js';
 import { setNativeCredentials } from '../native-credentials.js';
 import { useSIWEServerCall } from '../siwe-hooks.js';
@@ -103,14 +103,9 @@
               'An account with that username already exists',
             );
           } else if (e.message === 'client_version_unsupported') {
-            const app = Platform.select({
-              ios: 'App Store',
-              android: 'Play Store',
-            });
             Alert.alert(
-              'App out of date',
-              'Your app version is pretty old, and the server doesn’t know how ' +
-                `to speak to it anymore. Please use the ${app} app to update!`,
+              AppOutOfDateAlertDetails.title,
+              AppOutOfDateAlertDetails.message,
             );
           } else {
             Alert.alert('Unknown error', 'Uhh... try again?');
diff --git a/native/components/version-supported.react.js b/native/components/version-supported.react.js
new file mode 100644
--- /dev/null
+++ b/native/components/version-supported.react.js
@@ -0,0 +1,65 @@
+// @flow
+
+import * as React from 'react';
+
+import { useLogOut, logOutActionTypes } from 'lib/actions/user-actions.js';
+import { preRequestUserStateForSingleKeyserverSelector } from 'lib/selectors/account-selectors.js';
+import { isLoggedIn } from 'lib/selectors/user-selectors.js';
+import { useDispatchActionPromise } from 'lib/utils/action-utils.js';
+import { ashoatKeyserverID } from 'lib/utils/validation-utils.js';
+
+import { commRustModule } from '../native-modules.js';
+import { useSelector } from '../redux/redux-utils.js';
+import { AppOutOfDateAlertDetails } from '../utils/alert-messages.js';
+import Alert from '../utils/alert.js';
+
+function VersionSupportedChecker(): React.Node {
+  const hasRun = React.useRef(false);
+
+  const loggedIn = useSelector(isLoggedIn);
+  const preRequestUserState = useSelector(
+    preRequestUserStateForSingleKeyserverSelector(ashoatKeyserverID),
+  );
+  const dispatchActionPromise = useDispatchActionPromise();
+  const callLogOut = useLogOut();
+
+  const onUsernameAlertAcknowledged = React.useCallback(() => {
+    if (loggedIn) {
+      dispatchActionPromise(logOutActionTypes, callLogOut(preRequestUserState));
+    }
+  }, [callLogOut, dispatchActionPromise, loggedIn, preRequestUserState]);
+
+  const checkVersionSupport = React.useCallback(async () => {
+    try {
+      const isVersionSupported = await commRustModule.versionSupported();
+      if (isVersionSupported) {
+        return;
+      }
+      Alert.alert(
+        AppOutOfDateAlertDetails.title,
+        AppOutOfDateAlertDetails.message,
+        [
+          {
+            text: 'OK',
+            onPress: onUsernameAlertAcknowledged,
+          },
+        ],
+        { cancelable: false },
+      );
+    } catch (error) {
+      console.log('Error checking version:', error);
+    }
+  }, [onUsernameAlertAcknowledged]);
+
+  React.useEffect(() => {
+    if (hasRun.current) {
+      return;
+    }
+    hasRun.current = true;
+    checkVersionSupport();
+  }, [checkVersionSupport]);
+
+  return null;
+}
+
+export default VersionSupportedChecker;
diff --git a/native/redux/redux-setup.js b/native/redux/redux-setup.js
--- a/native/redux/redux-setup.js
+++ b/native/redux/redux-setup.js
@@ -1,6 +1,6 @@
 // @flow
 
-import { AppState as NativeAppState, Platform, Alert } from 'react-native';
+import { AppState as NativeAppState, Alert } from 'react-native';
 import { createStore, applyMiddleware, type Store, compose } from 'redux';
 import { persistStore, persistReducer } from 'redux-persist';
 import thunk from 'redux-thunk';
@@ -46,6 +46,7 @@
 import { getGlobalNavContext } from '../navigation/icky-global.js';
 import { activeMessageListSelector } from '../navigation/nav-selectors.js';
 import reactotron from '../reactotron.js';
+import { AppOutOfDateAlertDetails } from '../utils/alert-messages.js';
 import { isStaffRelease } from '../utils/staff-utils.js';
 import { setCustomServer, getDevServerHostname } from '../utils/url-utils.js';
 
@@ -266,16 +267,13 @@
     return;
   }
   if (payload.error === 'client_version_unsupported') {
-    const app = Platform.select({
-      ios: 'App Store',
-      android: 'Play Store',
-    });
     Alert.alert(
-      'App out of date',
-      'Your app version is pretty old, and the server doesn’t know how to ' +
-        `speak to it anymore. Please use the ${app} app to update!`,
+      AppOutOfDateAlertDetails.title,
+      AppOutOfDateAlertDetails.message,
       [{ text: 'OK' }],
-      { cancelable: true },
+      {
+        cancelable: true,
+      },
     );
   } else {
     Alert.alert(
diff --git a/native/root.react.js b/native/root.react.js
--- a/native/root.react.js
+++ b/native/root.react.js
@@ -35,6 +35,7 @@
 import MessageEditingContextProvider from './chat/message-editing-context-provider.react.js';
 import { FeatureFlagsProvider } from './components/feature-flags-provider.react.js';
 import PersistedStateGate from './components/persisted-state-gate.js';
+import VersionSupportedChecker from './components/version-supported.react.js';
 import ConnectedStatusBar from './connected-status-bar.react.js';
 import { SQLiteDataHandler } from './data/sqlite-data-handler.js';
 import ErrorBoundary from './error-boundary.react.js';
@@ -308,6 +309,7 @@
                                               detectUnsupervisedBackgroundRef
                                             }
                                           />
+                                          <VersionSupportedChecker />
                                         </PersistedStateGate>
                                         {navigation}
                                       </RegistrationContextProvider>
diff --git a/native/utils/alert-messages.js b/native/utils/alert-messages.js
new file mode 100644
--- /dev/null
+++ b/native/utils/alert-messages.js
@@ -0,0 +1,20 @@
+// @flow
+
+import { Platform } from 'react-native';
+
+type AlertDetails = {
+  +title: string,
+  +message: string,
+};
+
+const platformStore = Platform.select({
+  ios: 'App Store',
+  android: 'Play Store',
+});
+
+export const AppOutOfDateAlertDetails: AlertDetails = {
+  title: 'App out of date',
+  message:
+    'Your app version is pretty old, and the server doesn’t know how ' +
+    `to speak to it anymore. Please use the ${platformStore} to update!`,
+};