Works for Time Diary whether or not it has its own passcode. No download needed.
Touch and hold Time Diary's icon, tap Require Face ID, then confirm. On iOS 18 and later that puts Time Diary 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 Time Diary with Face ID
- Find Time Diary 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. Time Diary now asks for authentication every time it opens.
To test it, close Time Diary from the App Switcher and open it again. You should see the Face ID prompt before any content appears.
Hide Time Diary in App Library
- Touch and hold Time Diary'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 Time Diary?
Time Diary is a journal & diary app, the kind of app that tends to hold personal information you would not want on screen if someone borrows your unlocked phone. Journals collect your private thoughts, moods and often your location and photos. A lock screen inside the app is not the same as encryption of the synced entries.
Health and fitness apps can read Apple Health data only for categories you approve, one by one. What they collect themselves is shown on the label.
A lock answers one question — who can open the app on this iPhone. It does not change what Time Diary sends to its developer; for that, see Time Diary's full privacy report.
What the lock does and does not do
It does
- Ask for Face ID, Touch ID or passcode every time Time Diary opens
- Hide message previews in notifications
- Keep Time Diary'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 Time Diary stores data
- Sync to your iPad or other devices
- Remove Time Diary 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 Time Diary
Health
Health app › your profile picture › Apps › Time Diary. Turn categories on one at a time; the app cannot tell which ones you declined.
Notifications
Settings › Notifications › Time Diary › Show Previews: When Unlocked keeps message and account details off the Lock Screen.
Time Diary's full privacy label
None declared
None declared
Lock these apps too
After you lock Time Diary
Done. You have applied every control the label points to.
FAQ
Does Time Diary have its own passcode?
What happens to Time Diary's notifications when it is locked?
Can someone who knows my passcode open a locked app?
Is a locked Time Diary encrypted?
Why can't I see the Require Face ID option?
Does hiding Time Diary remove it from my purchase history?
Is Time Diary safe? Full privacy report →Does Time Diary track you? →Lock an app: A–Z →All health & fitness apps →