Classic Sudoku-leisure puzzle

Classic Sudoku is a casual puzzle app for your phone or tablet that delivers the timeless Sudoku experience with a clean, intuitive interface. It automatically saves your progress, so you can pause and resume exactly where you left off.

Choose from four difficulty levels (easy, medium, hard, extreme) and three input methods (digit first, cell first, popup). Use pencil marks with auto-fill/erase, intelligent hints, and history scores, plus selected-digit and incorrect-entry highlighting for smoother play.