Works for Period Tracker whether or not it has its own passcode. No download needed.
Touch and hold Period Tracker's icon, tap Require Face ID, then confirm. On iOS 18 and later that puts Period Tracker 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 Period Tracker with Face ID
- Find Period Tracker 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. Period Tracker now asks for authentication every time it opens.
To test it, close Period Tracker from the App Switcher and open it again. You should see the Face ID prompt before any content appears.
Hide Period Tracker in App Library
- Touch and hold Period Tracker'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 Period Tracker?
Period Tracker is a calendar planner, the kind of app that tends to hold personal information you would not want on screen if someone borrows your unlocked phone. Calendars reveal where you will be and who you meet. Planner apps may also read your other calendars and reminders.
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 Period Tracker sends to its developer; for that, see Period Tracker's full privacy report.
What the lock does and does not do
It does
- Ask for Face ID, Touch ID or passcode every time Period Tracker opens
- Hide message previews in notifications
- Keep Period Tracker'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 Period Tracker stores data
- Sync to your iPad or other devices
- Remove Period Tracker 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 Period Tracker
Health
Health app › your profile picture › Apps › Period Tracker. Turn categories on one at a time; the app cannot tell which ones you declined.
Notifications
Settings › Notifications › Period Tracker › Show Previews: When Unlocked keeps message and account details off the Lock Screen.
Period Tracker's full privacy label
The developer has not provided privacy details on the App Store.
Lock these apps too
After you lock Period Tracker
Done. You have applied every control the label points to.
FAQ
Does Period Tracker have its own passcode?
What happens to Period Tracker's notifications when it is locked?
Can someone who knows my passcode open a locked app?
Is a locked Period Tracker encrypted?
Why can't I see the Require Face ID option?
Does hiding Period Tracker remove it from my purchase history?
Is Period Tracker safe? Full privacy report →Lock an app: A–Z →All health & fitness apps →