Privacy Policy

Last updated: February 10, 2025

This Privacy Policy explains how Sudoku Online ("we", "us", or "our") collects, uses, and protects information when you visit https://sudoku-puzzles.online (the "Site"). By using the Site, you agree to the practices described in this policy.

1. Information We Collect

We do not require you to create an account, and we do not directly collect personal information such as your name, address, or phone number. However, the following information may be collected automatically or provided by you:

• Usage data: Pages visited, time spent, browser type, device type, operating system, and approximate location (country/region level).
• Guestbook messages: If you post a message in the guestbook, the nickname and message you enter are stored locally in your browser (via localStorage) and are never uploaded to our servers.
• Cookies and similar technologies: We and our advertising partners may use cookies to improve your experience and serve relevant ads (see Section 4).

2. How We Use Information

The limited information we collect is used to:

• Operate, maintain, and improve the Site.
• Understand how visitors use the Site so we can make it better.
• Display relevant advertisements through third-party advertising networks.
• Detect and prevent abuse, spam, or technical issues.

3. Local Storage

Sudoku Online uses your browser's localStorage to remember:

• Your theme preference (light or dark mode).
• Guestbook messages you've posted.
• Other minor UI settings.

This data stays entirely on your device. You can clear it at any time by clearing your browser's site data.

4. Google AdSense and Third-Party Advertising

We use Google AdSense to display ads on the Site. Google and its partners may use cookies to serve ads based on your prior visits to this Site or other websites.

• Google's use of advertising cookies enables it and its partners to serve ads based on your visits to this Site and/or other sites on the Internet.
• You may opt out of personalized advertising by visiting Google Ads Settings.
• You can also opt out of third-party vendors' use of cookies for personalized advertising by visiting aboutads.info.

Third-party vendors and ad networks may also use cookies, web beacons, or similar technologies to measure ad effectiveness. Their use of cookies is subject to their own privacy policies, not ours.

5. Analytics

We may use third-party analytics services (such as Google Analytics) to understand how visitors use the Site. These services may collect information such as your IP address, browser type, and pages visited. This data is aggregated and used for statistical purposes only.

6. Children's Privacy

Our Site is suitable for users of all ages, including children. We do not knowingly collect personal information from children under 13. If you are a parent or guardian and believe your child has provided us with personal information, please contact us so we can delete it.

7. Your Rights

Depending on your location, you may have the right to:

• Access, correct, or delete personal information we hold about you.
• Object to or restrict certain processing of your data.
• Withdraw consent for cookies at any time through your browser settings.

To exercise these rights, please contact us using the information in Section 9.

8. Data Security

We take reasonable measures to protect the limited information we handle. However, no method of transmission over the Internet or electronic storage is 100% secure, and we cannot guarantee absolute security.

9. Contact Us

If you have questions about this Privacy Policy, please contact us at:

Email: hello@sudoku-puzzles.online

10. Changes to This Policy

We may update this Privacy Policy from time to time. When we do, we will update the "Last updated" date at the top of this page. We encourage you to review this page periodically.