Addictively fun, no pushy ads or upgrade requests. 5 levels and you can play the "real" way, fill in superscript choices yourself, or have the game fill it in for you for a different kind of challenge. The game does reveal you've got correct or incorrect placement by putting the numbers in green or red, which I wish you could turn off for more of a challenge. (Edit: just realized that actually, you can! In the settings.) Still one of my favorite go-to games after years.

It lives up to its name, lots of enjoyment with plenty of helpful hints and some great graphics! If you like to play Sudoku check this one out, and even more so if you've never played it before. The "auto" tool is a great feature to help teach the game and there's plenty of hints available whenever you get stuck trying to solve a difficult puzzle!

I had never played Sudoku before using this app. I like the "Auto" feature, so that even a beginner can solve the puzzle, or the Hints will even lead you by the hand. There's a lot of help built-in to the app, so you can figure out how to use the features. I also like Undo and Redo, which is usually missing from iPhone apps.

Tried/bought numerous 'top-rated' Sudoku apps and they all have something to offer; this is the one I actually play. Wish I would have found this one earlier. No regrets with this purchase!