Cycle

Cycle helps you log periods and see estimated dates for your next period, fertile window, and ovulation.

Everything is stored encrypted on your phone. There is no account and no cloud. The app does not send your cycle data anywhere.

You can log flow, mood, symptoms, and notes, see a calendar, and turn on a local reminder the day before a predicted period. An optional app lock uses your fingerprint, face, or device PIN.

Dates are estimates from your logged history. They are not medical advice or contraception.