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Lunio

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Privacy Policy - Lunio (Cycle Tracker)

Last updated: 2026-06-12

1. Summary

Lunio is a menstrual cycle tracking app. It records your periods, symptoms, notes and predictions. The data you enter is stored locally on your device. The app collects no usage data: no analytics tool, no tracker.

2. Data collected

Lunio stores your data exclusively on your device via SwiftData (a local database encrypted by iOS). It is never sent to a developer server, never shared with third parties, never used for advertising. It only leaves your device if you export it yourself or through your personal iCloud backup. Deleting the app permanently erases all local data.

3. Health data

Your menstrual cycle data are sensitive health data under the GDPR. As such:

  • They are processed only on your device, via Apple Health (HealthKit) and encrypted local storage (NSFileProtectionComplete).
  • They are never transmitted to the developer or to any third party, and never used for advertising.
  • In line with Apple's rules, data read from Health is used only to provide the app's features.
  • Deleting the app erases the locally stored data.

4. Permissions

The app requests only the following permissions, at your initiative:

  • Apple Health (HealthKit), to read and/or save your menstrual cycle data
  • Face ID / Touch ID, for the optional app lock

You can revoke each permission at any time in iOS Settings.

5. Third-party services

The app uses no third-party service, no advertising network and no tracking or analytics tool. No data leaves your device.

6. Your rights (GDPR)

Since your data is stored locally on your device and no personally identifiable data is sent to our infrastructure, we hold no data about you. You exercise your rights of access, rectification and erasure directly from the app or by uninstalling it.

7. Disclaimer

Lunio is not a medical device or a contraceptive method. Cycle and fertile-window predictions are statistical estimates provided for guidance only; they must not be used to avoid or plan a pregnancy. For any reproductive health question, consult a healthcare professional.

8. Children

The app is not intended for children under 13.

9. Contact

For any question about this privacy policy, contact the developer at alexandre-paul@outlook.com.

© 2026 Alexandre Paul