Sudoku - No ads

The interface is excellent, very easy to use and has a nice-looking dark mode. I'm generally decent at Sudoku and this game's Medium level is brutal, Hard is impossible, and I haven't even tried Expert. The Easy level is not challenging in the slightest and takes less than 4 mins to fill in, but the next level up, Medium, takes upwards of 30-50 mins to solve and is extremely difficult. There are too many numbers removed and I always end up getting stuck or having to guess and then backtrack when it's wrong. Usually I'm able to solve difficult level sudokus without any guessing. I wish there were more steps in between the two difficulty levels of Easy and Medium so it wasn't so frustrating to play. I don't know if I'll be able to keep playing, I want to improve but there comes a point when it's not about any deduction skills, just luck, and I'm not interested in playing like that.

This app has been helpful in my training to get from intermediate to higher levels of difficulty. I love how you can place candidates automatically and how they highlight so you can see patterns. My only complaint is that with more difficult puzzles, they include many with multiple solutions. This is not classic sudoku. In sudoku, every puzzle should have exactly one and only one solution. By including these extra puzzles it makes it very difficult to learn the more difficult patterns because you try hard to find the next more for a long time before asking for solution help, only to find there are 22 solutions. Still overall it’s helped me to locate patterns much easier. Please consider eliminating these puzzles with multiple solutions. Thank you very much!

I’ve tried lots of apps for sudoku, most are full of ADs or are paid. This one is neither, it’s a good quality free app. The only feature that is paid is the ability to see other people’s times for each puzzle, and for explanations of more advanced techniques. I’ve used the free version a lot, and it’s very good. You can use it as a go-to Sudoku app with plenty of difficulties to chose from depending on your skill level and motivation. The notes work great and the app supports automatically highlighting certain important information as you select tiles and numbers—such as showing all your marked candidates for the number you select. Since the free app is very nice, and I appreciate the work put into the app as well as the fact that it has no ADs, I decided to pay for the pro version. The only important difference is when I’m solving a Sudoku and get stuck, I can use the solve button. This button explains a recevant technique and highlights it on the board, so that I can lean how to do it myself. This feature is excellent for learning in my opinion. You can also browse the rules and techniques at your leisure in the menu. The only qualm is that the victory screen in the dark mode is a bit bright, and that the statistics are a bit vague. Perhaps this menu could use some improvement, but I don’t think any of these situations are significant issues. PS: there is a multiplayer option called “friend battle”, I’ve never used it (don’t have any Sudoku friends) but it seems novel and fun.