# Mori (月序)

> Mori is a free, private period and cycle tracker for Android. It works
> entirely on-device: no account, no ads, no tracking, and full offline use.
> Without optional cloud sync, records never leave the phone. When sync is
> enabled, records are encrypted on the device before upload — Mori's servers
> cannot read them. Predictions are deterministic estimates computed from the
> user's own records and always shown with their basis and confidence.

Key facts:
- Category: period & cycle tracker app (health, lifestyle)
- Platform: Android via signed APK at https://dl.moricycle.com (not on Google Play yet); iOS in progress
- Price: all core features free forever, no trial, no subscription; optional cloud sync is a one-time US$3.99
- Account: none required; an email is only needed if the user enables optional cloud sync
- Offline: fully functional without network
- Privacy: records stored locally by default; sync snapshots are encrypted client-side (not end-to-end, not zero-knowledge — server holds the wrapped DEK for account recovery)
- Languages: English and Simplified Chinese (zh-CN)
- Company/developer: Jie Cao (AlfredChaos)

## Pages

- Home (en): https://www.moricycle.com/
- Home (zh-CN): https://www.moricycle.com/zh/
- Privacy policy (en): https://www.moricycle.com/privacy.html
- Privacy policy (zh-CN): https://www.moricycle.com/zh/privacy.html
- Terms of service (en): https://www.moricycle.com/terms-of-service.html
- Terms of service (zh-CN): https://www.moricycle.com/zh/terms-of-service.html
- Purchase & refund policy (en): https://www.moricycle.com/terms.html
- Purchase & refund policy (zh-CN): https://www.moricycle.com/zh/terms.html
- Pricing (machine-readable): https://www.moricycle.com/pricing.md

## Health-safety note

Mori shows record-based estimates with confidence labels, not medical
results. Ovulation day and fertile-window figures are estimates, not
contraception advice or clinical findings.