# Zendoku

> Elegant and distraction-free sudoku game with unlimited puzzles and customizable themes. (iPhone/iPad app by Harmonic Projects LLC.)

- Source: https://appshunter.io/ios/app/zendoku/id934571977 (this page in markdown: same URL + `.md`)
- Developer: [Harmonic Projects LLC](https://appshunter.io/developer/1772974838)
- Category: Games, Board, Puzzle
- Price: $0.99 (on sale, was $1.99)
- Rating: 4.00/5 from 2 App Store ratings · 3 written reviews indexed
- Age rating: 4+
- Requires: iOS 16.1 · 61 MB
- Languages: English
- Released: 2015-02-11
- Data updated: 2026-06-11
- Monetization: paid
- User reviews in markdown: https://appshunter.io/ios/app/zendoku/id934571977/reviews.md

## What is Zendoku?

Simple, clean, elegant sudoku game with unlimited puzzles and a focus on fewer distractions and ease of use.
Fully functional without any subscriptions or in-app purchases!

- Play puzzles from four difficulty settings from "Easy" to "Unfair"
- Choose from 32 beautiful and relaxing built-in themes
- Write notes by simply tapping and holding on a number while a cell is selected
- Turn off the timer and status bar for relaxed and distraction-free puzzle solving

## Key features

- Unlimited puzzles
- Four difficulty settings
- 32 relaxing themes
- Note-taking feature
- Distraction-free mode
- Offline play

## Recent user reviews (3 of 3)

All indexed reviews: https://appshunter.io/ios/app/zendoku/id934571977/reviews.md

### 2/5 — pretty....but

*2022-09-07, version 3.0.2*

this is very pretty, but this doesnt work easily. I tried the undo button to clear a square, when I accidently hit a square I did not mean, and it did not work on the cell I wanted it to, but took everything else off. I tried doing the instructions again to undo, didn't work. I want to be able to click on a number, then go click all the squares I want for that number, not go back and forth each time. This did not have that option, unless it is hidden.

### 5/5 — So simple and calming!

*2021-03-18*

I wanted to play a sudoku game with no flashing ads or unnecessary parts, and this game is perfect. The background images are very relaxing and the game is so simple. Really recommend this!

### 3/5 — Decent app

*2015-02-13, version 1.0.1*

But I would like to be able to turn off the color change when I correct numbers are placed on the board.

## Frequently asked questions about Zendoku

### What are the difficulty levels in Zendoku?

Zendoku offers four difficulty settings: Easy, Medium, Hard, and Unfair. This allows players of all skill levels to find a suitable challenge.

### Can I play Zendoku offline?

Yes, Zendoku is fully functional without an internet connection. You can enjoy unlimited puzzles anytime, anywhere.

### Does Zendoku have ads?

No, Zendoku is completely ad-free. The game provides a distraction-free experience with no advertisements.

### How much does Zendoku cost?

Zendoku is a paid app, available for a one-time purchase of $0.99. There are no subscriptions or in-app purchases required.

### What devices is Zendoku available on?

Zendoku is available on Mac, iPhone, and iPad. It is designed to run on Apple's ecosystem.

### How often is Zendoku updated?

The latest version of Zendoku is 4.1, last updated on April 13, 2026. Updates typically focus on improving performance and user experience.

### What is the age rating for Zendoku?

Zendoku has an age rating of 4+. This indicates it is suitable for children and adults alike.

### Can I make notes in Zendoku puzzles?

Yes, Zendoku includes a convenient note-taking feature. You can tap and hold on a number while a cell is selected to write notes.

## Version history (last 5 releases)

### 4.1 — 2026-04-13

- 17 Beautiful new themes
- Visual improvements
- Bug fixes

### 4.0.3 — 2025-01-16

Minor bug fixes.

### 4.0.2 — 2024-10-15

- New game controls at the bottom of the screen
- Easier theme switching
- Refreshed look and feel

### 4.0.1 — 2024-10-09

- New game controls at the bottom of the screen
- Easier theme switching
- Refreshed look and feel

### 4.0 — 2024-10-09

- New game controls at the bottom of the screen
- Easier theme switching
- Refreshed look and feel

## Apps similar to Zendoku

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [Math Puzzle and Riddles](https://appshunter.io/ios/app/math-puzzle-and-riddles/id6737306472) | — | Free | Games |
| [The Chinese Five Elements](https://appshunter.io/ios/app/the-chinese-five-elements/id895781672) | — | Free | Games |
| [Pex - Relaxing Puzzle Game](https://appshunter.io/ios/app/pex-relaxing-puzzle-game/id1621620013) | 5.0 (4) | Free | Games |
| [Sudoku & Killer: SudoKoi](https://appshunter.io/ios/app/sudoku-and-killer-sudokoi/id1521868089) | 4.8 (54) | Free | Games |
| [Just a Simple Sudoku](https://appshunter.io/ios/app/just-a-simple-sudoku/id6473736076) | — | Free | Games |
| [Apparent Sudoku](https://appshunter.io/ios/app/apparent-sudoku/id1518508009) | 3.2 (9) | Free | Games |

## More apps by Harmonic Projects LLC

- [PassMaker](https://appshunter.io/ios/app/passmaker/id340618049)
- [Zabuton](https://appshunter.io/ios/app/zabuton/id6736668920)

All apps by Harmonic Projects LLC: https://appshunter.io/developer/1772974838

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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 2026-06-11.*