Currently in private testing — join the waitlist

Period & cycle tracking

Your cycle,
quietly kept.

A calm, continuous calendar for logging periods, symptoms, moods, and notes—without turning your body into a score.

  • No account required for the app
  • Encrypted on-device cycle data
  • Designed for iOS & Android
CYCLE DAY 16 · JUL 21 Good morning
Next period estimate 3 August Predictions are estimates, not medical advice.

Built around the day

Useful at a glance. Detailed when you need it.

Log as much or as little as feels useful. Every daily field is optional.

A continuous calendar

Move through past and upcoming months in one timeline. See logged flow, predicted periods, and estimated fertile days together.

Flexible daily logging

Record flow, symptoms, moods, notes, and sexual activity from any day. Your entries can stay as simple as a single tap.

Made to feel like yours

Choose a warm or pink palette, use light or dark mode, set your week start, and use the app in any of 26 supported languages.

Optional reminders Samsung Health history import Portable JSON backup & restore

Privacy by default

Your cycle history stays under your control.

In the current app, cycle and wellness entries live in an encrypted database on your device. They are excluded from normal Android and iCloud backups and are not uploaded to us.

  • No third-party advertising or behavioral analytics in the app
  • Export and restore when you choose
  • Delete all locally stored app data from Settings

Export files are plaintext and leave the app only when you choose where to save or share them. Support messages are sent to our support provider. A future encrypted sync service, if released, will be optional and off by default. Read the full Privacy Policy below.

CURRENT APP

Encrypted cycle databaseOn
Automatic cloud backupExcluded
Ads & behavioral analyticsNone
Future cloud syncNot available

These statements describe the current app build, not the website waitlist.

Release updates

Be there when the calendar opens.

Leave your email and we’ll let you know when My Red Cousin is ready to try.

Your email is stored in a private SQLite database on our server and used only for these updates. We do not sell it.