Works for LOCK MEMO Secure Notes whether or not it has its own passcode. No download needed.
Touch and hold LOCK MEMO Secure Notes' icon, tap Require Face ID, then confirm. On iOS 18 and later that puts LOCK MEMO Secure Notes behind Face ID, Touch ID or your passcode; choose Hide and Require Face ID instead to move it into App Library's Hidden folder as well.
Lock LOCK MEMO Secure Notes with Face ID
- Find LOCK MEMO Secure Notes on your Home Screen or in App Library.
- Touch and hold the icon until the quick-actions menu opens.
- Tap Require Face ID (or Require Touch ID / Require Passcode, depending on your iPhone).
- Tap Require Face ID again to confirm. LOCK MEMO Secure Notes now asks for authentication every time it opens.
To test it, close LOCK MEMO Secure Notes from the App Switcher and open it again. You should see the Face ID prompt before any content appears.
Hide LOCK MEMO Secure Notes in App Library
- Touch and hold LOCK MEMO Secure Notes' icon and tap Require Face ID.
- Choose Hide and Require Face ID instead of Require Face ID.
- Confirm. The icon leaves your Home Screen and moves to the Hidden folder at the bottom of App Library.
- To open it later, swipe to App Library, tap Hidden and authenticate.
Hiding also locks the app. To undo either, touch and hold the icon again and choose Don't Require Face ID.
Why lock LOCK MEMO Secure Notes?
LOCK MEMO Secure Notes' privacy label lists location — the kind of data you would not want on screen if someone borrows your unlocked phone. Notes apps quietly collect some of your most personal writing. 'Encrypted' can mean encrypted in transit, at rest on the server, or end-to-end — only the last keeps the developer out.
Utilities range from calculators to VPNs, so their labels vary more than any other category. A simple tool that collects identifiers and usage data for tracking is a sign of advertising SDKs.
A lock answers one question — who can open the app on this iPhone. It does not change what LOCK MEMO Secure Notes sends to its developer; for that, see LOCK MEMO Secure Notes' full privacy report.
What the lock does and does not do
It does
- Ask for Face ID, Touch ID or passcode every time LOCK MEMO Secure Notes opens
- Hide message previews in notifications
- Keep LOCK MEMO Secure Notes' content out of Spotlight and Siri suggestions
- With Hide, remove the icon from the Home Screen
It does not
- Stop someone who knows your passcode
- Encrypt or change how LOCK MEMO Secure Notes stores data
- Sync to your iPad or other devices
- Remove LOCK MEMO Secure Notes from purchase history or Screen Time reports
Don't see Require Face ID?
- Update to iOS 18 or later in Settings › General › Software Update.
- Make sure a passcode is set in Settings › Face ID & Passcode; the lock needs one.
- Some Apple apps (Settings, Calculator, Camera, Maps, Find My, Clock) cannot be locked or hidden.
- If your iPhone is managed by work or school, the option may be restricted.
Other settings worth checking for LOCK MEMO Secure Notes
Tracking
Settings › Privacy & Security › Tracking. If “Allow Apps to Request to Track” is off, apps cannot ask, and they are told to treat you as having declined. You can also turn it off for this app alone.
Location
Settings › Privacy & Security › Location Services › LOCK MEMO Secure Notes. Choose While Using or Never, and switch off Precise Location if a city-level answer is enough.
Notifications
Settings › Notifications › LOCK MEMO Secure Notes › Show Previews: When Unlocked keeps message and account details off the Lock Screen.
LOCK MEMO Secure Notes' full privacy label
Lock these apps too
After you lock LOCK MEMO Secure Notes
Done. You have applied every control the label points to.
FAQ
Does LOCK MEMO Secure Notes have its own passcode?
What happens to LOCK MEMO Secure Notes' notifications when it is locked?
Can someone who knows my passcode open a locked app?
Is a locked LOCK MEMO Secure Notes encrypted?
Why can't I see the Require Face ID option?
Does hiding LOCK MEMO Secure Notes remove it from my purchase history?
Is LOCK MEMO Secure Notes safe? Full privacy report →Does LOCK MEMO Secure Notes track you? →Lock an app: A–Z →All utilities apps →