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Privacy Policy

Last updated: 4 July 2026

This Privacy Policy explains how the “Biorhythm Cycles” app (the “App”) handles your information. We built the App to respect your privacy: it works without accounts and keeps your data on your device.

Information stored on your device

Your date of birth and app settings are stored locally on your device only. This data is never transmitted to us and we never see it.

Information we collect

We, the developer, do not operate servers and do not collect, store or share any personal information about you.

Advertising

The free version of the App shows ads through Google AdMob. To serve and measure ads, Google may process information such as your device’s advertising identifier, IP address and app-usage data. Depending on your choices, ads may be personalized or non-personalized.

Purchases

The optional “Remove ads” purchase is processed by Apple through the App Store. We do not receive or store your payment details.

Children

The App is not directed to children under 13 and we do not knowingly collect data from them.

Changes to this policy

We may update this Privacy Policy from time to time. The latest version will always be available on this page.

Contact

If you have any questions about this policy, contact us at:

✉️ haircutmooncalendar@gmail.com