Cycle Privacy Policy
Cycle · Developer and operator: Sudarev Daniil · Last updated: October 28, 2026
Cycle is a cycle calendar. Your entries are personal health data, so they are stored only on your phone.
- No account or sign-up. We do not ask for your name, email or phone number.
- Entries, symptoms and forecasts are stored only on the device and are not sent to us.
- Backup is optional. It is encrypted on the phone with your recovery code before it leaves: the server stores data that nobody — including us — can read without that code.
- Your PIN and Face ID / fingerprint are checked by the phone itself.
- Reminders are neutral (“Check your calendar”) — nothing can be learned from the lock screen.
- No ads, analytics, trackers or purchases. Data is never sold or shared.
- Deleting the app deletes all data on the phone. To have a backup removed from the server, email [email protected].
1. Changes and contact
If this policy changes, the new version will be published on this page. Contact: [email protected].