Privacy Policy
Translation published: September 15, 2026. Data practices are unchanged from the policy dated August 30, 2026.
1. General policy
Nagi Sudoku does not collect user information, track users, or display advertising through the developer. There is no separate user registration.
2. Information stored on your device
Game numbers, grids, entries, pencil notes, history, statistics, and settings are stored on the device where you use the app. This information is not sent to the developer’s servers.
3. Game Center
If you choose to participate in the daily leaderboard, the app uses Apple Game Center. Apple processes your Game Center nickname, authentication, and leaderboard records. Please refer to Apple’s Privacy Policy.
4. Backup files
You can export and restore game data as a file. You choose where to save the exported file and with whom to share it. The developer does not receive it.
5. Contact
For questions about this policy, please use the email address below.
6. Changes
This policy may be revised to reflect changes to app features or applicable requirements. Important changes will be announced on this page.