Privacy Policy

Last updated: July 9, 2026

What we collect

As a guest: nothing leaves your device. All data you enter — name, gender, birth date, time and place, your partner's birth date, evening check-ins, and notification preferences — is stored only on your device.

When you sign in (with email, Apple, Google, or Facebook) to sync across devices, we store your account identifier and a copy of the same profile data (name, birth details, partner's birth date, check-ins, settings) in our secure backend (Supabase) so you can access it on any device where you log in. We do not sell this data, show ads, or use it for anything beyond running the app for you. Sign-in providers share only a basic identifier and, where you allow it, your name and email.

Third-party services

Supabase (backend, only when you sign in): hosts your account and synced profile data. See the Supabase privacy policy.
Sign-in providers (only if you use them): Apple, Google, or Facebook authenticate you and return a basic identifier/email. See each provider's privacy policy.
City search: when you type a city during onboarding, the text you type is sent to OpenStreetMap's Nominatim geocoding service (nominatim.openstreetmap.org) to find its coordinates. See the OSMF privacy policy. No other personal data is sent.
Notifications: daily reminders are local notifications scheduled on your device. No push servers are involved.

Analytics and advertising

None. The app contains no analytics SDKs, no trackers, and no ads.

Data deletion

As a guest, deleting the app or using "Reset profile" removes your local data — we keep no copies. If you have an account, contact us to delete your account and its synced data from the backend.

Contact

support@birthbit.app

Disclaimer

Birthbit is an entertainment app. The stars incline, you decide: forecasts and interpretations are hints drawn from cultural traditions, not medical, financial, legal, or psychological advice.