This review originally appeared within iLounge’s iOS Gems series within the compilation article, iPhone Gems: Every Sudoku Game, Reviewed. Additional details may be found in the original article.
Another of the standout versions is the professionally-developed SUDOKU Vol.01 ($6) by Japan’s Hudson Soft.
In addition to six plain wallpapers and six fonts—notably including a Japanese font so that players can experience the game in its fully original form—the game has its own simple music and sound effects, pre-empting your iPod’s, and the ability to make guess marks on the board. Hint, undo, and redo features are included, as is an interactive tutorial.
The game features 15 stages, five initially locked, with 50 puzzles a piece. It was co-developed with Nikoli, the “originator” of Sudoku.