Sudoku Zen - Calm Numbers
Sudoku at your own pace
Free · In‑App Purchases · Designed for iPad. Not verified for macOS.
Five grades from Gentle to Master, a daily puzzle shared by everyone, and no clock demanding anything of you. Free to play, for as long as you like.
Nine rows, nine columns, nine boxes, and one number that belongs in each square. That is all Sudoku has ever been, and it is enough.
Sudoku Zen adds nothing to it except quiet.
FIVE GRADES
• Gentle — a warm start, with nothing to untangle
• Calm — steady, unhurried logic
• Focused — asks for your full attention
• Deep — pairs and chains, for when you have time
• Master — for the patient mind
Every puzzle is generated with exactly one solution and is solvable by reasoning alone. You will never be asked to guess.
A DAILY PUZZLE
One puzzle a day, the same puzzle for every player in the world, and a streak that grows for as long as you keep coming back. Miss a day and the streak resets — unless you have a freeze saved.
BUILT FOR THINKING
• Notes, with a single tap to fill in every candidate
• Peer highlighting, so the row, column and box you are working in are obvious
• Matching-number highlighting across the whole grid
• Unlimited undo
• Mistake counting you can turn off entirely
NOTHING HURRIES YOU
No lives. No energy. No countdown. The timer can be hidden and forgotten. Put the app down mid-puzzle and it will be waiting exactly as you left it.
YOUR NUMBERS
Puzzles finished, best times by grade, your longest streak and the hour of day you play most. Kept on your device, and yours.
MADE WITH CARE
Full VoiceOver support, with every cell announced by its value, row, column and box. Reduce Motion honoured. A light and a dark theme that both work in real light.
No accounts. No advertising. No third-party tracking. Plays entirely offline.
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SUDOKU ZEN PLUS
Gentle, Calm and Focused, today's daily puzzle and three hints a day are free for as long as you want them. Sudoku Zen Plus opens the rest:
• Deep and Master grades
• Unlimited hints and full-grid checking
• The complete daily archive
• Two streak freezes a month
• Every theme, and detailed statistics
• Progress synced between your iPhone and iPad
SUDOKU ZEN PLUS is offered three ways, the same three in every Smart Daddy game:
• Monthly — US$1.99, billed monthly
• Yearly — US$7.99, billed yearly, with the first week free
• Lifetime — US$19.99, paid once, renewing never
Payment is charged to your Apple Account on confirmation. A subscription renews
automatically unless cancelled at least 24 hours before the period ends, and you
can cancel any time in Settings. Prices are in US dollars and may differ in your
local App Store.
Privacy policy: https://sudokuzen.smart-daddy.com/privacy.html
Terms of use: https://sudokuzen.smart-daddy.com/terms.html
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
The developer, SMART DADDY (SMC-PRIVATE) LIMITED, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- SMART DADDY (SMC-PRIVATE) LIMITED
- Size
- 1.4 MB
- Category
- Puzzle
- Compatibility
Requires iOS 17.0 or later.
- iPhone
Requires iOS 17.0 or later. - iPad
Requires iPadOS 17.0 or later. - Mac
Requires macOS 14.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- Sudoku Zen Plus - Monthly $1.99
- Sudoku Zen Plus - Yearly $7.99
- 100 Hints $2.99
- Sudoku Zen Plus - Lifetime $19.99
- 25 Hints $0.99
- Copyright
- © 2026 SMART DADDY (SMC-PRIVATE) LIMITED
