Sudoku Daily 4+

I have been playing this game for over a year on lap top and phone. The free version offers one game per day-can be repeated- for each of the 13 difficulties. It also has 3 lessons if you are just starting with soduku.
The top 5 difficulties (annoying - nightmare) are admittedly over my head and require knowledge of “fishes” “wings” “chains" “locked sets” etc. I can still play those puzzles because i can ask the game for hints (the game even has a learning feature explaining about the above terms). After trying them several times, I still have not developed the abiity to solve these more difficult puzzles on my own.
In general, it offers about 8 games daily of various difficulty for players like me not versed in the “mind bursting” strategies, has easy feature to fill in pencil marks for multiple numbers, offers computer filling all pencil marks, erase button for any cell and check entires feature.
With this game, you can have it in easy mode or do all out and have your soduku nightmare.
To top it all, at the end of each game it shows you the time to complete and even compares to other players without having to do any additional steps. Great for keeping track and pushing for improvement.
Very well done game.

This is the best app of Sudoku I’ve ever used, and I’ve tried a number of them. It’s difficulty levels go way higher than I’ll ever get to, but it is also a great learning tool. It shows you various tips and tricks for solving the more difficult puzzles. I’ve managed to bring my skill level up significantly simply by playing and using the hints (which expand on WHY a particular solution works. Aside from being a great learning experience, it’s also VERY easy to use both on my Mac and on my wife’s iPad. It’s well worth the small price for the Pro version as it allows me to play many games of the same difficulty per day. I highly recommend it.

I used to think I was pretty good at Soduku because I could finish almost anything that came my way. I downloaded Sudoku Daily for travel, and was shocked my first try at the difficult level to find that I was "faster than 1%" of people who had played at the same level. This sent my friends into gales of laughter. I'm getting better, although it really doesn't matter to me that I'm not very fast, I am becoming faster. I just like being able to DO the puzzle, but the timing adds an extra challenge. Great way to learn humility.