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Nice open source app. Great difficult modes and cool import of new XML sudoku.
★★★★★Brian Ronald· Sep 8, 2022
Fixed since 3.9.2, this app is back to its fantastic self. If you like sudoku, with a configurable level of assistance/cheating, no ads or costly add-ons, and a choice of input methods, this is the app you want.
★★★★☆Graeme Geldenhuys· Sep 19, 2023
I would have given 5 stars, if not for the bug. The bug being that it doesn't seem to always detect my incorrect input. Only later in the Sudoku puzzle do I realize that I made a mistake, then I have to use the "Undo to solvable state". Seeing that most of the time it tells me when I make a mistake, I assume this is a bug. Bug aside, what makes this app great is the multiple input methods, and the ability to manually input your own puzzles. No other sudoku app seems to allow for that! Kudos!
★★★★★Petko Alov· Mar 11, 2025
Well, it would be great to have a setting not to show SUID in the game list - they are really cluttering the smartphone screen. And something present in the previous versions - when you choose "Highlight completed numbers", the app is not blinking numbers if you already have a mistake (I'd love to set checkpoints and go to a "direct breaking of the game rules" without being hinted prematurely that the way is wrong :o)
★☆☆☆☆Steve Adams· Sep 20, 2024
Was brilliant, now rubbish. The latest update has completely spoiled a previously good app. I'll uninstall it now.
★☆☆☆☆Nick Daniels· May 25, 2025
Input modes are buggy and messed up. Tick marks only have the option for all and have to be manually edited and that is also messed up and buggy. Who messed up this upgrade?
★☆☆☆☆Daniel Wagner· Oct 6, 2024
Used to be the best Sudoku app. Most recent update completely breaks usability.
★☆☆☆☆Cate Malone· Nov 12, 2025
Please add the old color scheme, the new one is too chaotic, I cannot tell what's selected as colors are too similar I'm more than happy to change my review if these criteria is fixed please.
★★☆☆☆Bludra Kuře· Mar 5, 2021
Color picker in themes is broken. I can't play, when even and odd cells have different color, and I can't pick black
Google Play Rankings for Open Sudoku
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Technologies used by Open Sudoku
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