Last updated 26 September 2026
Sudoku Zero does not collect, store, share or sell any personal information. It has no advertising, no analytics, no accounts and no tracking.
Your games in progress, statistics, Daily Challenge history, streaks and settings are stored only on your device. They are never uploaded.
Regular games are created on your device and need no connection. The Daily Challenge is downloaded once from our server with a single request that contains only the date of the challenge. The request carries no account, device identifier, advertising identifier, cookie or other information about you.
Our server runs on DigitalOcean. Like any web host, the platform may keep standard infrastructure logs, such as IP addresses, for a limited time to operate the service. We do not use these to identify or track anyone, and we do not add identifiers to requests.
Sudoku Zero contains no third-party code that collects data: no advertising, analytics or crash reporting libraries.
Because no personal information is collected, the app is suitable for all ages.
If this ever changes, for example if a future feature collects data, this policy will be updated first and the app's App Store privacy details will be updated to match.
Questions about this policy: support@pureaidevelopment.com