Nonogrammes โ€” Privacy Policy

Last updated: June 6, 2026 ยท Version 1.0

No data collection

Nonogrammes does not collect any personal data. The app is a calm logic game (picross / hanjie / nonograms) that requires no account and never identifies the user. Your preferences (light/dark theme, display options) and your progress (solved puzzles, statistics, achievements) are stored exclusively on your device, in the app's local Hive database.

No personal data sent to our servers

The app does not transmit any personal data to our servers or to third parties. No account, no cloud, no synchronization of your information. Nonogram puzzles are generated locally on the device, and this generation does not identify you and contains no personal information about you. The app works 100% offline.

No account required

You do not need to create an account to use Nonogrammes. We do not ask for an email, name, phone number, or any other identifying information.

No advertising, no tracking

The app contains no advertising, no advertising tracking SDKs, no advertising identifier (Advertising ID), no analytics (Google Analytics, Firebase Analytics, Mixpanel, etc.), and no user behavior measurement tools.

Local data storage

Your preferences and progress are stored locally on your device by the app (built with Flutter, local Hive storage, for Android). This data never leaves your phone.

Permissions and sharing

The only system feature used by the app is share_plus, which opens your operating system's native share sheet when you explicitly initiate sharing a screenshot or text (for example, a solved puzzle). No sharing happens without your action, and the app has no access to any of the destinations you choose to share with.

Deleting your data

You stay in full control of your data. Uninstalling the app permanently deletes all the data it has stored on your device.

Children and privacy (COPPA)

Nonogrammes is designed for all ages (5+), including young children under 13. In accordance with the U.S. COPPA (Children's Online Privacy Protection Act) and the GDPR, we place particular importance on protecting children's privacy:

If you are a parent or guardian and have a question about your child's privacy, please contact us at the address below.

Changes to this policy

This policy may be updated if the app undergoes major changes. The last update date is shown at the top of this page.

Contact

Publisher: Hugo Ferreira. For any questions about this privacy policy: hugoferreirapro803@gmail.com