diff --git a/RNTester/js/RNTesterApp.ios.js b/RNTester/js/RNTesterApp.ios.js
index e13178d024e797..411e352bd23d06 100644
--- a/RNTester/js/RNTesterApp.ios.js
+++ b/RNTester/js/RNTesterApp.ios.js
@@ -61,13 +61,19 @@ const Header = ({onBack, title}: {onBack?: () => mixed, title: string}) => (
 );
 
 class RNTesterApp extends React.Component<Props, RNTesterNavigationState> {
+  _mounted: boolean;
+
   UNSAFE_componentWillMount() {
     BackHandler.addEventListener('hardwareBackPress', this._handleBack);
   }
 
   componentDidMount() {
+    this._mounted = true;
     Linking.getInitialURL().then(url => {
       AsyncStorage.getItem(APP_STATE_KEY, (err, storedString) => {
+        if (!this._mounted) {
+          return;
+        }
         const exampleAction = URIActionMap(
           this.props.exampleFromAppetizeParams,
         );
@@ -83,6 +89,10 @@ class RNTesterApp extends React.Component<Props, RNTesterNavigationState> {
     });
   }
 
+  componentWillUnmount() {
+    this._mounted = false;
+  }
+
   _handleBack = () => {
     this._handleAction(RNTesterActions.Back());
   };