Last updated: May 26, 2026
This Privacy Policy explains how Sudoku Classic and related pages process information when you use the mobile application, visit related website pages, or contact us in connection with the app.
The controller responsible for the processing described in this Policy is Wadefour Ltd., 1106 Budapest, Gyakorló street 10., Hungary. You may contact us at service@wadefour.com.
Sudoku Classic is designed to work without account creation and, in its current version, normal gameplay does not require you to provide personal data to us. Most game-related information is stored locally on your device.
Depending on how you use the app or related pages, the following categories of information may be processed:
We use information to provide app functionality, restore gameplay state, preserve user preferences, operate and secure related pages, respond to inquiries, maintain compatibility across devices, and comply with legal obligations.
Sudoku Classic stores certain gameplay and preference data locally on your device using platform storage mechanisms. This may include settings, paused session data, local leaderboard entries, and onboarding or consent preferences. This information is used to make the app function properly and to improve continuity of your gameplay experience on your own device.
We do not state that Sudoku Classic shares normal gameplay data with advertising or analytics SDKs in its current version. However, app stores, operating system providers, hosting providers, and email providers may independently process technical or transactional information under their own privacy terms when you download the app, access related pages, or contact us.
Where the GDPR or similar law applies, we process personal data on the basis of our legitimate interests in operating, securing, and supporting the app and related pages, performance of a contract where you request a service from us, your consent where consent is legally required, and compliance with legal obligations.
Information stored locally by the app generally remains on your device until you delete it, reset the app, or remove the app. If you contact us directly, we retain related communications only for as long as reasonably necessary to handle the request, keep appropriate records, and comply with legal obligations.
Where personal data is processed through service providers located outside your country of residence, it may be transferred internationally. Where required, we rely on appropriate safeguards permitted by applicable data protection law.
We use reasonable administrative, technical, and organizational measures designed to protect personal data. However, no method of transmission, hosting, or storage is completely secure, and absolute security cannot be guaranteed.
Sudoku Classic is a general-audience puzzle game and is not intended to knowingly collect personal data from children. If you believe a child has provided personal data to us directly, please contact us and we will review the request and take appropriate steps.
Where applicable law provides such rights, you may request access to, correction of, deletion of, restriction of, or portability of your personal data, and you may object to certain processing activities. Where processing is based on consent, you may withdraw consent at any time. You may also lodge a complaint with the competent supervisory authority.
Related website pages may use cookies, local storage, or similar technologies to remember preferences, operate the site, and, where enabled, measure traffic or performance. Any such use is subject to applicable law and the notices presented on those pages.
We may update this Privacy Policy from time to time. The updated version will be posted on this page together with the revised date.
If you have questions about this Privacy Policy or wish to exercise your rights, please contact us at service@wadefour.com.