Your data stays yours
Privacy Policy
Effective July 21, 2026
S3DOKU is designed to be private. The app works offline and does not require an account. We do not collect, transmit, sell, or share personal data.
Information we collect
S3DOKU does not collect personal information, usage analytics, advertising identifiers, precise location, contacts, photos, or other data from your device. The app contains no advertising or third-party tracking technology.
Information stored on your device
Your puzzle progress, preferences, purchase entitlement, and gameplay state are stored locally on your device so the app can resume your game and remember your settings. This information is not sent to us.
In-app purchases
If you purchase the Full Game Unlock, Apple processes the transaction through the App Store. We do not receive or store your payment-card or banking information. Apple may process information according to its own privacy policy and terms.
Children’s privacy
Because S3DOKU does not collect personal data, it does not knowingly collect personal information from children.
Deleting app data
You can remove locally stored S3DOKU data by deleting the app from your device. Reinstalling the app may allow Apple to restore a verified App Store purchase.
Changes to this policy
If the app’s data practices change, this policy and the App Store privacy disclosure will be updated before those changes take effect.
Contact and support
For privacy questions or support, open a request in the S3DOKU support repository. Please do not include private, payment, or financial information.