Bluma: Offline Period Tracker

Most period apps send your intimate health data to servers. Bluma doesn't.

Bluma is a private and open source period tracker that works fully offline. Everything you log is encrypted and stored exclusively on your device.

No cloud • No account needed • No ads • Nothing to sell, share or leak

Key features:
- Predict upcoming periods, fertile windows, and ovulation dates based on your unique cycle history.
- Track daily symptoms, moods, menstrual flow, vaginal discharge, basal body temperature (BBT), and sexual activity.
- View cycle averages, history, and phase insights.
- Discover symptom patterns over time.
- Back up and restore your encrypted data locally whenever you need.
- Set reminders for periods and fertile windows.
- Lock the app with the device's biometrics.
- Switch between dark and light themes.
- Available in English, Spanish, and Portuguese

Why Bluma?
- Your data stays on your device, encrypted — no cloud involved.
- 100% offline, so no internet connection required, ever.
- Predictions, logs and insights are generated on-device from your cycle history.
- No account needed, just open the app and start tracking. No email, no sign-up.
- No third-party tracking.
- No ads, ever.
- Clutter-free and intuitive design built to be as enjoyable to use as it is private.
- Open source — code available on GitHub.
- Free to use.

Track your menstrual cycle without compromising your privacy.

⚠️ Important: Bluma is not intended for medical use, diagnosis, or contraception.

Source code: https://github.com/blumaHQ/bluma-app