Mori · Period Tracking & Cycle Estimates
Log your period, see your cycle, change any day. No account, no internet — records and estimates stay on this phone.
The first screen you'll see in the app · mock
Mori does the opposite.
Sign up first, or you can't use it
No account — open it and start logging
Splash ads, feeds, marketing pushes
No ads, and no feed
Health data uploaded to servers by default
Data stays on this phone
One certain date, no explanation
Estimates come with a range, a basis, and a confidence level
This describes common defaults, not any specific product.
In any order — and always editable.
Tap a day in the calendar and it's logged; consecutive days connect automatically. Symptoms and moods can be jotted down too.
The cycle ring shows which day and phase you're on. Next period, ovulation window and ovulation day are all estimates — each one states its basis and confidence.
Forgot to log a day? Add it later. The calendar, ring and stats recalculate immediately.
Solid marks are your records; light and outlined ones are estimates. Change any day, and every estimate recalculates instantly.
Sep 27 – 30
Try it: tap and watch the estimates move
Now: next period est. Sep 27–30, based on your last 6 cycles, confidence high.
Want to try it now? Download the Android APK ↓
Period data lives on this device only — no ads, no analytics, no third parties. Without sync, it never leaves the phone.
No sign-up, no login. Notification permission is only requested when you turn reminders on.
Airplane mode is fine: logging, the ring, reminders and export all work without a network.
No ads, no feed. Notifications never reveal cycle status, and each reminder type can be turned off separately.
Moving to a new phone? Turn sync on yourself: data is encrypted on this phone first, then uploaded to your verified email account.
No sync, nothing uploaded.
JSON · CSV · a readable summary — take everything out of the app anytime.
One entry, a category, or everything; you'll see exactly what will be deleted first.
Android installs straight from this page; the iOS version is on its way to the App Store.
ad5230ea2aeba782af5ecc7bfff95b56516508b9a707c7551b607b44190f49d9Preparing for the App Store — this page will be updated the moment there's a date.
Chinese Android app stores are in preparation; links will be added here.
The package is signed with Mori's official certificate and distributed only from this page. Before downloading, check that the address bar shows this site's domain.
Yes. Mori records the days that actually happened, regular or not. Estimates come from your own history: when your cycle varies a lot, the range widens and the confidence drops — it won't pretend to be certain. And when there isn't enough history yet, Mori says so instead of inventing a date.
New versions appear on this page first. Come back, download again and install over the old one — your records stay.
After installing Mori on the new phone, turn on sync in settings to bring your data over. Prefer not to sync? Use export and carry the files yourself.
Logging, history, estimates, export, deletion and turning reminders off will never sit behind a paywall. Even if paid features appear later, these stay as they are.
Not settled yet — we're working through the App Store requirements. This page will be updated as soon as there's news.
No. Notifications never mention cycle status, and each reminder type can be turned off separately.