A little space to think

One puzzle.
Your own pace.

A free, ad-free Sudoku notebook for a little everyday focus. Play offline, without an account or subscription.

Find your level

Choose from eight difficulties, from Beginner to Maelstrom. Play today’s puzzle, revisit an earlier day, or start a practice game whenever you like.

Room to work things out

Pencil notes, automatic candidates, undo and redo, and hints with explanations help you work through each grid. Your saved game is there when you return.

A notebook of your progress

See your scores, times and history at each difficulty. Choose a light, dark or automatic theme, and export a backup to carry your notebook to another device.

A daily point of comparison

See how your time and score compare with other players on the same day’s puzzle. Comparison uses a random app-generated ID and is on by default; you can turn it off in Settings. Read what is shared.

Quiet Sudoku is currently being tested and refined for iPhone. Android is also in development. Public download links will appear here when available.

Need a hand? Visit support or email [email protected].