Privacy Policy
Last updated: May 27, 2026
Overview
Daily Challenge is committed to protecting your privacy. We believe you should be able to enjoy our puzzles without worrying about your personal data. This policy explains what information we collect and how we use it.
No Registration Required
You can play Daily Sudoku without creating an account or providing any personal information. We do not require your name, email address, or any other identifying details.
Local Storage
We use your browser's local storage to save your game progress, including:
- Current puzzle state and entered numbers
- Game notes and hints used
- Completion time and mistakes
- Puzzle history and statistics
This data is stored exclusively on your device and is never transmitted to our servers. You can clear this data at any time by clearing your browser's local storage.
No Cookies
We do not use cookies to track your behavior or serve targeted advertisements. Our site is designed to be a clean, ad-free experience.
Analytics
We may use privacy-respecting analytics to understand general usage patterns (such as page views and device types). Any analytics we use are configured to not collect personally identifiable information.
Third-Party Services
Daily Sudoku does not integrate with third-party tracking, advertising, or social media services. Your gameplay data stays on your device.
Children's Privacy
Daily Sudoku is suitable for all ages. We do not knowingly collect personal information from children under 13.
Your Rights (GDPR / CCPA)
Since we do not collect personal data on our servers, there is no data to access, modify, or delete from our end. All your data is under your control through your browser's local storage settings.
Changes to This Policy
We may update this privacy policy from time to time. Any changes will be reflected on this page with an updated "Last updated" date.
Contact
If you have questions about this privacy policy, please contact us at [email protected].