Privacy policy

Last updated November 5, 2026

The short version

You don't need an account to use Puzzdoku. Your game progress, best times and streaks are stored in your own browser (localStorage) and never sent to us.

Information stored on your device

• Puzzles in progress, best times, solved levels and daily streaks.
• Preferences such as Auto ✕ in Cat Sudoku.

You can delete this at any time by clearing your browser's site data for puzzdoku.com.

Server logs and analytics

Our hosting provider (Cloudflare) processes standard technical data such as IP address, browser type and pages requested in order to deliver the site and protect it from abuse. We may use privacy-friendly, aggregate analytics to understand which puzzles are popular. We don't sell personal data.

Advertising

Puzzdoku may show ads to keep the puzzles free. If we use Google AdSense, Google and its partners may use cookies to serve ads based on your visits to this and other websites. You can opt out of personalised advertising at Google Ads Settings. Visitors in the EEA, UK and Switzerland will be asked for consent before personalised ads are shown.

Children

Puzzdoku is suitable for all ages and doesn't knowingly collect personal information from children.

Contact

Questions about privacy? Email hello@puzzdoku.com.