Suduku:Zen

Find calm in every grid. Enjoy six Sudoku levels, daily offline puzzles, smart notes, free hints, autosave, detailed stats, and no account required. Play at peace.

Slow down. Start with one number.

Sudoku Zen creates a calm, uncluttered space for classic Sudoku on iPhone. Whether you are learning the rules or taking a focused break, choose a puzzle and solve it entirely at your own pace.

SIX LEVELS OF CLASSIC SUDOKU

• Choose Easy, Medium, Hard, Expert, Master, or Extreme at any time.
• Every generated puzzle has a unique solution.
• Highlight related cells and matching numbers, and see how many of each number remain.

TOOLS THAT SUPPORT YOUR THINKING

• Add candidate notes, erase entries, and undo moves.
• Automatically remove matching notes from related cells after a correct entry.
• Use free hints with an explanation when a logical single is available.
• Turn mistake checking on or off and optionally set a three-mistake limit.
• Hide the timer or pause whenever you need a break.

A NEW DAILY CHALLENGE

• Play a fixed puzzle for each day based on your device's local date.
• Return to past dates from the calendar and track monthly progress.
• Keep each Daily Challenge separate from your Classic game.

LOCAL SAVES AND USEFUL STATISTICS

• Automatically save numbers, notes, undo history, and active play time on your device.
• Continue your Classic game or any unfinished Daily Challenge later.
• Review completed games, high scores, mistake-free wins, best times, and average times.

MAKE IT YOURS

• Use the app in English or Simplified Chinese.
• Choose Light, Dark, or System appearance.
• Adjust haptics, timers, highlighting, automatic note cleanup, and mistake checking.

PRIVATE AND OFFLINE

• No account required.
• No ads or in-app purchases.
• No third-party analytics or tracking.
• Generate and solve puzzles without an internet connection.
• Keep game data locally on your device.

Sudoku Zen does not currently provide cloud sync. Uninstalling the app or erasing device data may permanently remove local progress and statistics.

A little patience. A moment of clarity.