# Pure-sudoku — Ad-free

> Ad-free classic 9x9 Sudoku game with multiple difficulty levels and offline play. (iPhone/iPad app by 又瑞 韦.)

- Source: https://appshunter.io/ios/app/pure-sudoku/id6751444374 (this page in markdown: same URL + `.md`)
- Developer: [又瑞 韦](https://appshunter.io/developer/1625836878)
- Category: Entertainment
- Price: $0.99
- Age rating: 4+
- Requires: iOS 15.0 · 25 MB
- Languages: American English, Chinese (Simplified, China)
- Released: 2025-08-28
- Data updated: 2026-08-29
- Monetization: paid
- User reviews in markdown: https://appshunter.io/ios/app/pure-sudoku/id6751444374/reviews.md

## What is Pure?

Classic 9x9 Sudoku, ad - free!
It supports step - by - step hints, one - click marking of all candidate numbers, independent marking and drawing.
There are multiple difficulty levels of questions built - in: Easy/Normal/Medium/Difficult/Expert/Extreme, with 1000 questions for each level. 
It can be played offline, and 17 - clue Sudoku puzzles are also integrated.

Sudoku Rules: Fill in the 9x9 grid with numbers 1~9 such that each row, column, and 3x3 box contains each number exactly once.

## Key features

- Classic 9x9 Sudoku
- Ad-free experience
- Multiple difficulty levels
- Step-by-step hints
- Candidate number marking
- Offline play
- 1000 questions per level

## Recent user reviews (3 of 3)

All indexed reviews: https://appshunter.io/ios/app/pure-sudoku/id6751444374/reviews.md

### 5/5 — 使用无广

*2026-02-23*

简洁流畅

### 3/5 — 好多重复的题目

*2025-10-15*

其他没看，中级里面好多连续相似的题目，感觉连着十题都是一样的套路，就是变了一下数字，做几题之后都能背出来了

**Developer response:** 感谢反馈，新版本已优化题目难度跨度，请更新。我们后台总的题量超过了百万，旧版本直接按难度分提取题目时，因为跨度低，确实容易导致提取到相似题目。

### 5/5 — 好

*2025-08-29*

没广告，题目也很多，等我通关！

## Frequently asked questions about Pure

### Does Pure-sudoku have ads?

No, Pure-sudoku is advertised as an ad-free experience. This means you can enjoy the puzzles without any interruptions from advertisements.

### How much does Pure-sudoku cost?

Pure-sudoku is a paid application with a price of $0.99. This one-time purchase grants you access to all its features.

### What devices is Pure-sudoku available on?

Pure-sudoku is available for iPhone, iPad, and iPod devices. It is designed for the iOS ecosystem.

### What is the age rating for Pure-sudoku?

Pure-sudoku has an age rating of 4+. This indicates it is suitable for players of all ages, with no mature content.

### Can I play Pure-sudoku offline?

Yes, Pure-sudoku can be played offline. This allows you to enjoy the puzzles without needing an internet connection.

### How many difficulty levels are in Pure-sudoku?

Pure-sudoku features multiple difficulty levels, including Easy, Normal, Medium, Difficult, Expert, and Extreme. Each level contains 1000 questions.

### When was Pure-sudoku last updated?

The latest version of Pure-sudoku, 1.2.5, was last updated on March 18, 2026. The app was initially released on August 28, 2025.

### What makes Pure-sudoku stand out from other Sudoku apps?

Pure-sudoku distinguishes itself by offering a completely ad-free experience and a vast number of puzzles, with 1000 questions available for each of its six difficulty levels.

## Version history (last 5 releases)

### 1.2.5 — 2026-03-18

Optimize for keyboard

### 1.2.3 — 2026-01-28

Optimize for UX

### 1.2.2 — 2025-12-04

优化数独技巧解释

### 1.2.1 — 2025-11-05

修复候选数标记中的异常

### 1.2.0 — 2025-10-20

优化内置题库题目

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## More apps by 又瑞 韦

- [K.O. Sudoku - Sudoku Solver](https://appshunter.io/ios/app/ko-sudoku-sudoku-solver/id1625864447)
- [K.O. Nonogram](https://appshunter.io/ios/app/ko-nonogram/id1626831214)
- [K.O. Flip - Light up](https://appshunter.io/ios/app/ko-flip-light-up/id1627027420)
- [K.O. Slitherlink](https://appshunter.io/ios/app/ko-slitherlink/id1629925581)
- [K.O. Sudoku Pro](https://appshunter.io/ios/app/ko-sudoku-pro/id6479217148)
- [K.O. Nonogram Pro](https://appshunter.io/ios/app/ko-nonogram-pro/id6737248261)

All apps by 又瑞 韦: https://appshunter.io/developer/1625836878

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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 2026-08-29.*