Works for Note Lock ~ Keep your secret whether or not it has its own passcode. No download needed.
Touch and hold Note Lock ~ Keep your secret's icon, tap Require Face ID, then confirm. On iOS 18 and later that puts Note Lock ~ Keep your secret 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 Note Lock ~ Keep your secret with Face ID
- Find Note Lock ~ Keep your secret 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. Note Lock ~ Keep your secret now asks for authentication every time it opens.
To test it, close Note Lock ~ Keep your secret from the App Switcher and open it again. You should see the Face ID prompt before any content appears.
Hide Note Lock ~ Keep your secret in App Library
- Touch and hold Note Lock ~ Keep your secret's 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 Note Lock ~ Keep your secret?
Note Lock ~ Keep your secret is a encrypted notes app, the kind of app that tends to hold personal information 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 Note Lock ~ Keep your secret sends to its developer; for that, see Note Lock ~ Keep your secret's full privacy report.
What the lock does and does not do
It does
- Ask for Face ID, Touch ID or passcode every time Note Lock ~ Keep your secret opens
- Hide message previews in notifications
- Keep Note Lock ~ Keep your secret's 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 Note Lock ~ Keep your secret stores data
- Sync to your iPad or other devices
- Remove Note Lock ~ Keep your secret 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 Note Lock ~ Keep your secret
Notifications
Settings › Notifications › Note Lock ~ Keep your secret › Show Previews: When Unlocked keeps message and account details off the Lock Screen.
Note Lock ~ Keep your secret's full privacy label
None declared
None declared
Is Note Lock ~ Keep your secret safe? Every data type explained →
Lock these apps too
After you lock Note Lock ~ Keep your secret
Done. You have applied every control the label points to.
FAQ
Does Note Lock ~ Keep your secret have its own passcode?
What happens to Note Lock ~ Keep your secret's notifications when it is locked?
Can someone who knows my passcode open a locked app?
Is a locked Note Lock ~ Keep your secret encrypted?
Why can't I see the Require Face ID option?
Does hiding Note Lock ~ Keep your secret remove it from my purchase history?
Is Note Lock ~ Keep your secret safe? Full privacy report →Does Note Lock ~ Keep your secret track you? →Lock an app: A–Z →All utilities apps →