Privacy Policy

Decode Self

Effective 19 July 2026 · Android & iOS · Developer: Vikas Rajpoot (individual)

Decode Self is private by default — your cycle, symptoms, nourishment and mind data stay on your device. The only thing that ever uses the cloud is the optional Partner sharing feature, and only if you choose to turn it on. No ads, no analytics, no selling of data — ever.

What the app stores (on your device only)

Decode Self keeps the following in a private local database on your phone:

By default this data never leaves your device. The core app has no account system, and nobody — including the developer — can access it.

Optional partner sharing (off by default)

If — and only if — you turn on Partner sharing and pair with a partner, a small, limited slice of information is synced through Google Firebase (Cloud Firestore, Authentication and Cloud Messaging) so your partner's copy of the app can show it. This is the only feature that leaves your device.

What the app does not do

Network access

The app may download font files from Google Fonts when it first runs (font files only — no personal data). If you enable Partner sharing, the app connects to Google Firebase to sync the limited share described above. If you never enable Partner sharing, these Firebase requests do not carry any of your data.

Backups

Your device's operating system may include the app's local data in device backups (for example Android backup or iCloud backup) according to your OS backup settings. Those backups are controlled by you and your OS provider, not by Decode Self.

Deleting your data

Uninstalling the app permanently deletes all data it stored on your device. If you used Partner sharing, tapping Unpair in Settings deletes the shared record from the cloud and stops all syncing; your partner immediately loses access.

Children

Decode Self is intended for adults and is not directed at children under 16.

Health disclaimer

Decode Self provides general wellness information based on the dates you enter. It is not a medical device, does not provide medical advice, and must not be used for contraception or to diagnose or treat any condition. Always consult a qualified health professional for medical questions.

Changes to this policy

If the app ever changes how it handles data (for example, adding optional cloud sync), this policy will be updated first and the effective date above will change.

Contact

vikasrajpoot0100@gmail.com