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
Local Cycle Core
The free OpenCycle-hosted 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
OpenCycle remains separate
OpenCycle is a separate optional product for richer patterns, reminders, exports, and advanced privacy controls. Local Cycle Core stays fully usable without those extras.
Learn more at OpenCycleLegacy route
If you reached this page from a legacy local cycle domain, we will stay here and help you continue safely. A gentle upgrade link is available when you are ready.
Privacy and license
Plain boundaries before release
Local Cycle Core 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.