Last updated: May 2026 · RFUSA LLC
Club Sudoku does not collect, transmit, or store any personally identifiable information on our servers. All gameplay data — including your statistics, settings, and puzzle history — is stored locally on your device using your browser's localStorage. This data never leaves your device and is not accessible to us.
Club Sudoku itself does not use cookies. However, our advertising partner (Google AdSense) may use cookies to serve personalized advertisements based on your prior visits to our website and other websites on the internet. You can opt out of personalized advertising by visiting Google Ads Settings.
We use Google AdSense to display advertisements on Club Sudoku. Google AdSense is a third-party advertising service provided by Google LLC. Google may use cookies and web beacons to serve ads based on your prior visits to Club Sudoku or other websites. These cookies enable Google and its partners to serve ads to you based on your visit to our site and/or other sites on the Internet.
Google's use of advertising cookies enables it and its partners to serve ads based on your visit to Club Sudoku and/or other sites on the Internet. For more information about how Google uses data when you use our website, visit Google's Privacy & Terms.
Since we do not collect personal data, there is no personal data for us to delete or provide to you upon request. To clear your local Club Sudoku data (statistics, settings), you can use the "Reset All Statistics" button in the Statistics page, or clear your browser's localStorage directly.
Club Sudoku is suitable for all ages. We do not knowingly collect any personal information from children under the age of 13. Since we collect no personal information at all, Club Sudoku is fully compliant with the Children's Online Privacy Protection Act (COPPA).
We may update this Privacy Policy from time to time. We will notify users of any changes by updating the "Last updated" date at the top of this page.
If you have any questions about this Privacy Policy, please contact us at rf3usa@gmail.com or write to RFUSA LLC.