SUDOKIS is a free software, which is developed by Sudoku enthusiasts from Germany in their spare time. SUDOKIS runs completely on your local computer without calling remote web services. Therefore, SUDOKIS does not collect any personal data from users. You do not need to register to use SUDOKIS. A login is not necessary.

There are only two situations in which the SUDOKIS application accesses the https://sudokis.com website. Firstly, it checks whether the version is still up to date each time it is started. For this purpose, there is a one-time query of the version number to the URL https://sudokis.com/version/version.txt. No further information is sent to the server. In addition, the more than 100,000 Sudokus are not available locally, but the page https://sudokis.com/sudokus-app1.0.html is embedded into the SUDOKIS application.

We have set up a discussion board for SUDOKIS at the provider freeforums.net, please use the board for discussions about Sudoko and SUDOKIS. But please note that this is an external website with its own terms and conditions. Please check these conditions at https://www.proboards.com/

When we say it's free to use SUDOKIS, that's exactly what we mean. This also applies when Sudokus are created with SUDOKIS, which are then published for commercial purposes e.g. in books or newspapers. It is also allowed to use SUDOKIS for the creation of commercial Sudoku videos. But we kindly ask you to respect our fair use policy. If you create and publish a Sudoku with SUDOKIS, please add the note “created with sudokis.com”.

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