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App · Checked October 15, 2026

Flo

A cycle app Flo describes for periods, ovulation, pregnancy, and perimenopause.

Best forOne app that covers period, ovulation, pregnancy, and perimenopause modes.

Who it's for
People who want a single account-based app across several stages and will read the privacy policy before signing up.

Flo's site says people use the app to log periods and symptoms, estimate ovulation, follow a pregnancy, and track perimenopause. Those estimates are product features, not a clinical reading. Flo uses an account. Compare its privacy policy with how much you want stored off your phone.

Pros

  • Broad coverage on iOS and Android, including pregnancy and perimenopause.
  • Symptom logging sits next to the cycle calendar.

Cons

  • An account stores data off the phone. Compare that with how private you need the log to be.
  • Estimates are product features, not a clinical reading, and extra content is sold as a subscription.

From the Jaan Journal

Related listings

  1. From the publisherJaanA private iPhone log, if you want notes to stay on the device.
  2. AppClueA straightforward cycle log, from a first period through perimenopause.
  3. AppStardustPeriod, ovulation, and pregnancy tracking if you also like a lunar frame.