Monthlys
A faster, more private period and ovulation tracker, with adaptive predictions and an AI assistant that actually knows your data. Free forever plan, no credit card, Android app available.

See the app

What's inside
Cycle & ovulation predictions
Adaptive predictions that get sharper every cycle you log — not a flat 28-day guess.
Pregnancy mode
Announce you're expecting and Home itself switches — week-by-week development, a due-date wheel, tailored articles.
Share with up to 5 people
Give a partner, a parent, or a doctor their own code to see your full calendar and daily logs, read-only. No account needed.
Symptom correlation
See which symptoms cluster before your period, and when — patterns most trackers never surface.
A real article library
Cycle basics, trying to conceive, pregnancy, LGBTQ+ & family building, and more — free for everyone.
Your data isn't the product
Health data is never sold or shared with advertisers, and every log is protected by row-level security enforced at the database.