Ninefold: Calm Sudoku

Sudoku should feel clear, not crowded.

Ninefold is a calm, focused Sudoku game for solving at your own pace. Every puzzle is generated on your device with one unique solution, so there is always a fresh board ready when you are.

CHOOSE YOUR CHALLENGE Start with Easy, settle into Medium, or test your logic with Hard and Expert boards.

USE THE TOOLS YOU NEED Add pencil marks, undo moves, check your board, reveal a cell with a hint, or swap to a new puzzle.

BUILD YOUR RHYTHM Follow your completion count, solving time, streak, progress, mistakes, and achievements in a local journal.

MADE FOR YOUR SPACE Choose light, dark, or system appearance. Play in nine languages with an interface designed for focus and accessibility.

PLAY ANYWHERE No account is required. Puzzles are generated on-device, and your board, preferences, and gameplay statistics are stored locally. Core gameplay works offline.

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