Mori
Private period tracker — no account, works offline
Mori is a free, private period tracker for Android. Log your period in one tap on a calendar, and see the next one as a date range with its basis and confidence level.
No account, no ads, works fully offline — without sync turned on, records never leave your phone. Optional cloud sync is a one-time US$3.99, encrypted on-device before upload.
Available as a signed APK download (not on Google Play yet). English and Chinese.
Features
One-tap period logging on an interactive calendar
Next-period prediction shown as a date range with basis and confidence
Ovulation day and fertile window estimates, clearly labeled as estimates
Local reminders with discreet notification text
Full export (JSON/CSV/readable summary) and one-tap delete-all
No account, no ads, no subscription
Use Cases
Track your period and see the next cycle window without creating an account
Understand how regular your cycles are over time
Keep health records on-device instead of in someone else's cloud
Export or permanently delete everything when you want
Comments
Hi Fazier 👋 I built Mori after the 2024 reporting on period apps selling cycle data. Most trackers lock logging behind an account and sync by default — Mori flips that: no account, no ads, works offline, and records stay on the phone unless you opt into encrypted sync. It's a one-time purchase, not a subscription. Would love feedback on whether the privacy tradeoffs land for people here.
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Comments
Hi Fazier 👋 I built Mori after the 2024 reporting on period apps selling cycle data. Most trackers lock logging behind an account and sync by default — Mori flips that: no account, no ads, works offline, and records stay on the phone unless you opt into encrypted sync. It's a one-time purchase, not a subscription. Would love feedback on whether the privacy tradeoffs land for people here.
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