Mooneva Cycle – Period Tracker

Mooneva Cycle is a private, fully offline period tracker and menstrual cycle calendar. Track your period, predict your next cycle, follow your fertile window and ovulation, and log daily symptoms and mood — all without an account, and without a single byte leaving your phone.

Why offline matters
Most period tracking apps upload your cycle data to company servers, where it can be sold to advertisers, exposed in a breach, or demanded by law enforcement. Mooneva has no servers at all. Your data is encrypted on your device using PBKDF2 and AES-GCM, and the app does not even request the internet permission — there is nothing to transmit, and nothing to hand over.

Features


• Period and menstrual cycle tracking with adaptive predictions

• Fertile window and ovulation estimates

• PMS window warnings

• Daily log: mood, symptoms, flow intensity, discharge, sex and libido

• Pill and contraception reminders — pill, patch, ring, injection, IUD, implant

• Trends, cycle history and symptom heatmaps by cycle day

• Clinical PDF report to share with your doctor

• Birth control mode — hides fertility, tags withdrawal bleeds

• Pregnancy mode — pauses predictions and alerts

• Discrete mode — disguises the app as a task list, icon and name included

• PIN lock with configurable timeout

• Encrypted backup and restore

• Import your history from drip, Flo, Clue and SimpleInnovation

• Persian (Jalaali) calendar and full right-to-left support

• Configurable first day of week

• Dark theme

Available in 14 languages
English, German, Spanish, Swedish, Chinese, Persian, Arabic, Turkish, French, Ukrainian, Italian, Hungarian, Russian and Portuguese.

Privacy
No accounts. No cloud. No analytics, no crash reporters, no advertising SDKs, no third-party services of any kind. Mooneva cannot see your data, because it never receives it.

Open Source
Licensed under GPL-3.0-or-later. Full source code available on GitHub.