There can be ad problems – Sudoku ~ Classic Puzzle Game Review

The ad header can refuse to go away. In those times I can't use the input grid without constantly moving it to avoid blocking the puzzle. I thought this was permanent but it eventually went away. It took several sessions of ad watching. There has to be a balance in these things. Besides the ad issues this is the best honest way to play the puzzle. Other apps have distracting cheater features.
Review by Cattails Farm on Sudoku ~ Classic Puzzle Game.