5 stars: This game is great and has just gotten better over time. The few things I was missing in gameplay I either found were already there or got added over time (such as auto filling pencil marks and crossing off combinations). My one remaining suggestion would be to offer different colors to show selected numbers. The yellow on beige combo is super hard on the eyes at times.
5 stars: Very good. Really challenging puzzles to keep you occupied. I found even the easy puzzles quite difficult, some taking half an hour to solve. Small problem, I dislike that you can get away with making mistakes by just pressing back a couple of times, and I don't like the display much either, but I'm just nit-picking. The substance of the game is great, and the ads are not overly intrusive, which is a big deal with me. Thanks.
3 stars: Fun and interesting sudoku game. There are 90 free levels to play, anything after that is paid for content. Biggest con is that the price for the amount of content is too high, personally, I believe more free levels should be released in between multiple paid levels to entice longer play and player retention.
2 stars: Not a bad program but just ok. The levels are not consistent; easy is sometimes hard and hard sometime easy and they dont differ much. And the interface could be improved. You have to put your notes in every cell and cant select a few cells to do that in one go.
2 stars: I've enjoyed solving this puzzle on paper for years, which is ...