Free and local
Track cycle entries with zero fees and no cloud dependency. Cycle data stays on your machine or local network.
Local-first cycle tracking
open-cycle
A free tracker for period dates, flow, symptoms, moods, and notes. No paid gate, no login, and no account required.
Cycle Log
Stored on this device
Date
Today
Cycle data stays local
Browser or Android device storage only.
No ads or telemetry
No analytics scripts, ad SDKs, or cloud sync.
Public for scrutiny
Review the source, privacy policy, and Play Store materials.
What ships
Small, inspectable, and ready for local use
Private by default
The public local-only build does not collect, sell, transmit, or monetize personal data.
Release-ready materials
Store descriptions, data-safety answers, screenshots, release notes, and validation scripts live with the code.
Optional extras
open-cycle stays focused
Optional advanced open-cycle features can add richer patterns, reminders, exports, and additional privacy controls while core tracking stays fully usable.
Learn more about open-cycleLegacy route
If you reached this page from an older route, we will stay here and help you continue safely. Advanced feature links are available when you are ready.
Privacy and license
Plain boundaries before release
open-cycle is a personal wellness log, not medical advice, diagnosis, or treatment. The repository is source-available, not open source, and not licensed for commercial reuse or third-party app store redistribution.