About
Classic Sudoku, calmly presented.
Start with Beginner or Easy on 4×4 boards, or choose from six difficulties on 9×9 boards, from Beginner through Extreme. Progress, best times, statistics, and appearance choices stay on your device, so the core game works offline.
Save entries and pencil notes, undo a move, or use one included hint and two checks per puzzle. Optional rewarded ads provide extra help. A small banner appears during gameplay; Lifetime access removes banners and includes unlimited hints, checks, and all themes.