Privacy Policy
This page explains, in plain language, how Sudokumee handles information when you use the website.
Last updated: September 20, 2026
1. Information we collect
Sudokumee works without an account and doesn't ask for personal information to play. The game doesn't collect your name, email address or location.
2. Data stored in your browser
Sudokumee uses your browser's local storage to remember your last mode and difficulty, your game in progress in each mode (the puzzle, your entries, notes and timer), your best solve time for each mode and difficulty, and whether the optional support popup has already been shown so it doesn't keep appearing. This data stays on your device and is not sent to us. You can remove it at any time by clearing this site's data in your browser settings.
The Support button links to our Buy Me a Coffee page, a separate service with its own privacy policy. Nothing is shared with it unless you choose to follow that link.
The print buttons and the printable puzzles page build the printout on your own device. Nothing about the puzzles you make or print is sent to us.
3. Hosting and server logs
Like most websites, the service that hosts Sudokumee may automatically process technical information such as your IP address, browser type and the time of each request in order to deliver and secure the site.
4. Ads, analytics and cookies
Sudokumee doesn't show ads, and it doesn't currently use analytics or advertising cookies. If third-party services such as analytics or embedded content are added in the future, they may use cookies or similar technologies according to their own policies, and this page will be updated before they are introduced.
5. Changes
This Privacy Policy may be updated when the website's features or data practices change. The current version is always published here, with its last-updated date at the top.
6. Contact
For privacy questions, contact hello@sudokumee.com.