# Sudoku Zen - Calm Numbers — Sudoku at your own pace

> Sudoku at your own pace (iPhone/iPad app by SMART DADDY (SMC-PRIVATE) LIMITED.)

- Source: https://appshunter.io/ios/app/sudoku-zen-calm-numbers/id6806456065 (this page in markdown: same URL + `.md`)
- Developer: [SMART DADDY (SMC-PRIVATE) LIMITED](https://appshunter.io/developer/1691579578)
- Category: Games, Entertainment, Board, Puzzle
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 17.0 · 1 MB
- Languages: American English
- Released: 2026-09-17
- Data updated: 2026-09-29

## What is Sudoku Zen?

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.

—

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

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| Sudoku Zen Plus - Yearly | $7.99 | per year |
| Sudoku Zen Plus - Monthly | $1.99 | per month |

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| 25 Hints | $0.99 | one-time |
| Sudoku Zen Plus - Lifetime | $19.99 | one-time |
| 100 Hints | $2.99 | one-time |


## Is Sudoku Zen safe?

Not enough ratings yet to assess Sudoku Zen.

## Is Sudoku Zen legit?

Sudoku Zen - Calm Numbers appears legitimate, with a few gaps. The AppsHunter Legitimacy Score for Sudoku Zen is 70 out of 100 points across 7 verification signals from App Store and developer data.


## Version history (last 1 release)

### 1.0 — 2026-09-17

No release notes.

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All apps by SMART DADDY (SMC-PRIVATE) LIMITED: https://appshunter.io/developer/1691579578

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-09-29.*