High-intent answer

period tracking app with face id or passcode lock iPhone

Cyca includes an optional App Lock so your cycle data stays private even if someone else picks up your phone.

Get Cyca on the App Store → free tool →

Short answer

Enabling App Lock in Cyca's Settings requires Face ID, Touch ID, or your iPhone passcode every time the app opens from background or cold launch. Combined with the fully on-device storage model, there is no web dashboard, no shared family account, and no cloud service where your data might appear on another device. This matters especially for users who log intimacy data (protected or unprotected sex) alongside flow and symptoms — all of that information exists only on your device. Cyca has no network dependency for any of its core tracking features: cycle data, logs, and forecasts all work without any internet connection. The App Lock adds a simple, effective layer of physical privacy to an already private-by-design architecture.

Try Cyca on a real example first, and check the current App Store listing for exact features and pricing before you decide.

What to look for before choosing

  • Optional App Lock: Face ID, Touch ID, or iPhone passcode
  • Activates every time the app returns from background
  • Intimacy logging (protected / unprotected) stored on-device only
  • No web dashboard or account accessible from another device
  • Works fully offline — no internet required for any health feature

A practical decision process

  1. Define the job you need done most often.
  2. Test the app with real content or a realistic scenario.
  3. Check privacy labels and account requirements.
  4. Confirm export and backup options.
  5. Choose the pricing model you are comfortable maintaining.

Quick comparison

NeedWhat to checkWhy it matters
Pricing modelCheck whether useful features require a subscription, a one-time unlock, or neither.The cheapest app on day one may not be cheapest after a year.
Privacy modelPrefer on-device work when the content is sensitive.Private documents, resumes, study data, and family content deserve careful handling.
Export / lock-inConfirm file formats, sharing, backup, and deletion controls.A good app should help you finish the task, not trap your work.

Where Cyca fits

Cyca is built for exactly this — use the checklist above and test it on a real example.

PrivateNo adsOn-device

This page is an independent buying guide. App Store features and prices can change, so confirm details on the listing before purchase.

FAQ

Does Cyca lock automatically when I leave the app?

Yes. When App Lock is enabled, Cyca requires authentication every time it comes back from the background or is opened fresh — so it is protected even after a brief interruption.

Does Cyca need an internet connection?

No internet connection is needed for any of Cyca's cycle tracking, forecasting, logging, or reminder features. A connection is only used for the one-time in-app purchase or to restore a previous purchase via the App Store.

Can I delete my data in Cyca?

Yes. You can clear your cycle history and all daily logs from within Cyca's Settings, removing all data from your device. There is no cloud copy to worry about.