Privacy policy
Stilval collects nothing. This page explains what that means in practice.
Last updated: 2026-09-02
- What we collect
- Nothing. Stilval has no account system, no login, no analytics and no advertising identifier. It does not ask for your name or your email address, and the only permission it asks Android for is vibration.
- What leaves your device
- Nothing, and Stilval could not send anything even if it wanted to: the app asks Android for no network permission at all, which you can see in its Play Store listing under App info, Permissions. There is no server. Your scores, your daily streak, your unlocked themes, your settings and any game you left half-finished are stored on your phone and nowhere else. Uninstalling the app deletes them.
- Android's own backup
- One thing does travel, and Android does it rather than Stilval. If you have Android's backup switched on, the system copies apps' local data to your own Google account, so that a new phone can restore it. That is also the only way your progress survives a change of phone, since Stilval has no account of its own. Stilval never sees that backup and cannot read it; what happens to it is covered by Google's terms rather than ours. You can switch it off under Settings, Google, Backup.
- The daily puzzle
- Everyone gets the same daily puzzle, but it is not downloaded. It is calculated from the date on your own device, which is why it works in airplane mode.
- Sharing a score
- If you tap Share, your phone's own share sheet opens with a line of text. Where that text goes is entirely your choice, and Stilval never sees it.
- Children
- Stilval is suitable for all ages. Because it collects nothing from anyone, it collects nothing from children either.
- Google Play
- Google Play collects its own data when you install or update any app, such as your download history. That is Google's processing, not ours, and it is covered by Google's own privacy policy.
- Future changes
- If a future version ever adds optional rewarded video, that will involve an advertising provider and this page will be updated before it ships. It will remain entirely voluntary.
- Contact
- Questions about this policy: privacy@stilval.com