5 stars: It just works. The only time I got mad at it was when I hit the hint button on accident, but there's a menu option to turn them off. I suspect that one of the puzzles on the diabolical difficulty is actually impossible, but either it is impossible and the developer put it in there to mess with us, or it is possible and I'll have to get better to figure it out. Either way I like it.
4 stars: Good sudoku solver, sometimes I preferred a solver that allowed user to key in (from hardcopy) puzzle number and start playing by using this solver. Hopefully can see new feature like this in the future. So far haven't seen a sudoku solver created in such functions.
5 stars: App is easy to use, very user friendly, different levels available, can make notes. Loving it!
4 stars: It's a good game to challenge my brain. I try t play it daily, in the hope that it will slow down the progression of my alzhimers.
3 stars: Custome sudoku option doesnot work. The cells are already loaded. Blank sudoku board is not available to enter custome sudoku
5 stars: Great game. Especially when things around you are a bit flat.
4 stars: Please make it harder to push the Hint Button, i keep pressing it by accident while holding my cellphone, or at least ask for confirmation?
5 stars: Excellent change to the brain no ads mid play so no interruption great game highly recommended
4 stars: Works OK for me , no operating problems despite using an old damage tablet
5 stars...