diff --git a/lib/reducers/enabled-apps-reducer.js b/lib/reducers/enabled-apps-reducer.js
--- a/lib/reducers/enabled-apps-reducer.js
+++ b/lib/reducers/enabled-apps-reducer.js
@@ -1,36 +1,80 @@
 // @flow
 
+import { setClientDBStoreActionType } from '../actions/client-db-store-actions.js';
 import { setNewSessionActionType } from '../keyserver-conn/keyserver-conn-types.js';
+import type { SyncedMetadataStoreOperation } from '../ops/synced-metadata-store-ops.js';
 import type { EnabledApps } from '../types/enabled-apps.js';
 import {
   defaultEnabledApps,
   defaultWebEnabledApps,
 } from '../types/enabled-apps.js';
 import type { BaseAction } from '../types/redux-types.js';
+import { syncedMetadataNames } from '../types/synced-metadata-types.js';
 import { authoritativeKeyserverID } from '../utils/authoritative-keyserver.js';
 import { relyingOnAuthoritativeKeyserver } from '../utils/services-utils.js';
 
 export const enableAppActionType = 'ENABLE_APP';
 export const disableAppActionType = 'DISABLE_APP';
 
+type ReduceEnabledAppsResult = {
+  +enabledApps: EnabledApps,
+  +syncedMetadataStoreOperations: $ReadOnlyArray<SyncedMetadataStoreOperation>,
+};
+
+function getUpdatedEnabledAppsResult(
+  enabledApps: EnabledApps,
+): ReduceEnabledAppsResult {
+  return {
+    enabledApps,
+    syncedMetadataStoreOperations: [
+      {
+        type: 'replace_synced_metadata_entry',
+        payload: {
+          name: syncedMetadataNames.ENABLED_APPS,
+          data: JSON.stringify(enabledApps),
+        },
+      },
+    ],
+  };
+}
+
 export default function reduceEnabledApps(
   state: EnabledApps,
   action: BaseAction,
-): EnabledApps {
+): ReduceEnabledAppsResult {
   if (action.type === enableAppActionType && action.payload === 'calendar') {
-    return { ...state, calendar: true };
+    return getUpdatedEnabledAppsResult({ ...state, calendar: true });
   } else if (
     action.type === disableAppActionType &&
     action.payload === 'calendar'
   ) {
-    return { ...state, calendar: false };
+    return getUpdatedEnabledAppsResult({ ...state, calendar: false });
+  } else if (action.type === setClientDBStoreActionType) {
+    let enabledApps = { ...state };
+    const enabledAppsString =
+      action.payload.syncedMetadata?.[syncedMetadataNames.ENABLED_APPS];
+    if (enabledAppsString) {
+      enabledApps = {
+        ...enabledApps,
+        ...JSON.parse(enabledAppsString),
+      };
+    }
+    return {
+      enabledApps,
+      syncedMetadataStoreOperations: [],
+    };
   } else if (
     action.type === setNewSessionActionType &&
     action.payload.sessionChange.cookieInvalidated &&
     action.payload.keyserverID === authoritativeKeyserverID() &&
     relyingOnAuthoritativeKeyserver
   ) {
-    return process.env.BROWSER ? defaultWebEnabledApps : defaultEnabledApps;
+    return getUpdatedEnabledAppsResult(
+      process.env.BROWSER ? defaultWebEnabledApps : defaultEnabledApps,
+    );
   }
-  return state;
+  return {
+    enabledApps: state,
+    syncedMetadataStoreOperations: [],
+  };
 }
diff --git a/lib/reducers/master-reducer.js b/lib/reducers/master-reducer.js
--- a/lib/reducers/master-reducer.js
+++ b/lib/reducers/master-reducer.js
@@ -180,6 +180,8 @@
     threadStoreOperations,
   );
 
+  const { enabledApps } = reduceEnabledApps(state.enabledApps, action);
+
   const { syncedMetadataStore, syncedMetadataStoreOperations } =
     reduceSyncedMetadataStore(state.syncedMetadataStore, action);
 
@@ -243,7 +245,7 @@
       ),
       alertStore: reduceAlertStore(state.alertStore, action),
       lifecycleState: reduceLifecycleState(state.lifecycleState, action),
-      enabledApps: reduceEnabledApps(state.enabledApps, action),
+      enabledApps,
       reportStore,
       dataLoaded: reduceDataLoaded(state.dataLoaded, action),
       userPolicies: policiesReducer(state.userPolicies, action),
diff --git a/lib/types/synced-metadata-types.js b/lib/types/synced-metadata-types.js
--- a/lib/types/synced-metadata-types.js
+++ b/lib/types/synced-metadata-types.js
@@ -9,6 +9,7 @@
 const syncedMetadataNames = Object.freeze({
   CURRENT_USER_FID: 'current_user_fid',
   STORE_VERSION: 'store_version',
+  ENABLED_APPS: 'enabled_apps',
 });
 type SyncedMetadataName = $Values<typeof syncedMetadataNames>;