A window, not a date
Your next period is shown as a range with a confidence, because that is what the data supports. The softer the edges, the less sure we are — and you can see it.
Last periodExpected 14–18 SepTrying to conceive · Pregnancy · Private
Honest ranges instead of promises, guides that show their sources, and records that never leave your phone. No account, no cloud, no ads near your records.
Google Play · Coming soon · iPhone · Coming soon
No account, nothing saved.
Every stage
When your life changes, femio re-arranges around it — it never starts you over and it never deletes what came before.
Your record is one record. Switching stage re-layers what you see over it — nothing is archived away from you, and you can switch back.
Honest by design
Your next period is shown as a range with a confidence, because that is what the data supports. The softer the edges, the less sure we are — and you can see it.
Last periodExpected 14–18 SepCycles shift for dozens of ordinary reasons. If the window passes, femio says so and stops — it does not run a counter at you.
Your window has passed. Cycles shift — this is common and usually not a problem.
Everything is compared against your history — including when your cycles are irregular, which is exactly where other apps give up.
Private by design
The femio app keeps what you log on your device. We never see it, so there is nothing for anyone to sell, share or lose.
Why trust it
Free, no account
femio is for learning and tracking — not medical advice, and not a reliable way to avoid pregnancy. Always speak to your clinician about your care.