diff --git a/apps/mobile/src/App.tsx b/apps/mobile/src/App.tsx
index f2a809361ee4..86166278108b 100644
--- a/apps/mobile/src/App.tsx
+++ b/apps/mobile/src/App.tsx
@@ -23,6 +23,7 @@ import { appAtomRegistry } from "./state/atom-registry";
 import { OverlayPortalHost } from "./components/OverlayPortal";
 import { shouldHandleAppLink } from "./lib/appLinking";
 import { useMobileNavigationTheme } from "./lib/useMobileNavigationTheme";
+import { useUiRuntimeMemoryWarningGc } from "./lib/useUiRuntimeMemoryWarningGc";
 import { SubscriptionUsageCoordinator } from "./widgets/SubscriptionUsageCoordinator";
 import { VoiceInputProvider } from "./features/voice-input/VoiceInputProvider";
 import { GlobalVoiceInputControl } from "./features/voice-input/GlobalVoiceInputControl";
@@ -57,6 +58,8 @@ function SplashScreenCoordinator() {
 }
 
 export default function App() {
+  useUiRuntimeMemoryWarningGc();
+
   return (
     <RegistryContext.Provider value={appAtomRegistry}>
       <CloudAuthProvider>
diff --git a/apps/mobile/src/lib/useUiRuntimeMemoryWarningGc.ts b/apps/mobile/src/lib/useUiRuntimeMemoryWarningGc.ts
new file mode 100644
index 000000000000..8e702f25aa17
--- /dev/null
+++ b/apps/mobile/src/lib/useUiRuntimeMemoryWarningGc.ts
@@ -0,0 +1,24 @@
+import { useEffect } from "react";
+import { AppState } from "react-native";
+import { scheduleOnUI } from "react-native-worklets";
+
+function collectUiRuntimeGarbage() {
+  "worklet";
+  // Hermes exposes `gc` on the worklets UI runtime; skip quietly on runtimes that do not.
+  const gc = (globalThis as { gc?: () => void }).gc;
+  if (typeof gc === "function") gc();
+}
+
+/**
+ * React Native only collects the main JS runtime on an iOS memory warning. The
+ * worklets UI runtime is a separate Hermes heap that holds native shadow nodes and
+ * serializables alive until its own GC runs, so collect it on the same warning.
+ */
+export function useUiRuntimeMemoryWarningGc() {
+  useEffect(() => {
+    const subscription = AppState.addEventListener("memoryWarning", () => {
+      scheduleOnUI(collectUiRuntimeGarbage);
+    });
+    return () => subscription.remove();
+  }, []);
+}