Support

Last updated October 7, 2026

Something not working, or a question about rytm? Email hello@flapp.studio and we’ll get back to you. Telling us your phone model, OS version and what you were doing helps a lot.

Ideas for new features: Settings → “Suggest a feature” in the app, or email hello@flapp.studio. We read every message.

Quick answers

A value looks wrong

Each value is 100 × sin(2π × d ÷ P), where d is the number of calendar days since the birth date and P is 23, 28 or 33. Check the birth date in Settings, and open a cycle to see the day number and the exact calculation.

Reminders aren’t arriving

Check that notifications are allowed for rytm in your phone’s settings and that “Daily reminder” is on in rytm. If your phone saves battery aggressively, it may delay notifications.

The widget says “Open rytm to set up”

Open the app once, with your birth date entered, so the widget has data to show.

I bought Pro but it’s locked

Open Settings in rytm (or the Pro screen) and tap “Restore purchase”. Use the same App Store or Google Play account you bought it with. Pro is a one-time purchase, so there’s nothing to cancel.

I want to remove my data

Settings → “Delete my data” clears your profile, people and settings. Deleting the app removes everything it stored.

Privacy and legal

See the Privacy Notice and the Terms of Use. For the waitlist, see Waitlist privacy.

rytm is published by Adam Pasierski - flapp.studio, a sole proprietorship registered in Poland (NIP 7471938809, REGON 545829707).