# YL Killer Sudoku — Ad-free, offline puzzles

> Ad-free Killer Sudoku puzzles with multiple difficulty levels and grid sizes. (iPhone/iPad app by 又瑞 韦.)

- Source: https://appshunter.io/ios/app/yl-killer-sudoku/id6758269011 (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 · 27 MB
- Languages: Chinese (Simplified, China), American English
- Released: 2026-01-30
- Data updated: 2026-08-29
- Monetization: paid
- User reviews in markdown: https://appshunter.io/ios/app/yl-killer-sudoku/id6758269011/reviews.md

## What is YL Killer Sudoku?

9x9/6x6 Killer Sudoku, ad - free!
It supports group prompt, 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.

Killer Sudoku Rules: Numbers cannot be repeated in each row/column/box, each cage(dashed-line group) shows a sum for its digits, which must also be unique within the cage.

## Key features

- 6x6 and 9x9 Killer Sudoku grids
- Multiple difficulty levels
- Group prompt and step-by-step hints
- One-click candidate marking
- Independent marking and drawing
- Offline play
- Ad-free experience

## Recent user reviews (2 of 2)

All indexed reviews: https://appshunter.io/ios/app/yl-killer-sudoku/id6758269011/reviews.md

### 1/5 — 打不开

*2026-03-21*

完全打不开！

**Developer response:** 你好，我们用多台设备测试都能正常使用，麻烦提供下更多信息，比如：设备型号、iOS版本、语言与地区，以便更好的排查和定位

### 5/5 — 好

*2026-01-31*

分组提示很方便

## Frequently asked questions about YL Killer Sudoku

### What are the grid sizes available in YL Killer Sudoku?

YL Killer Sudoku supports both 6x6 and 9x9 grid sizes, offering variety for different skill levels and preferences.

### Does YL Killer Sudoku have ads?

No, YL Killer Sudoku is ad-free, providing an uninterrupted puzzle-solving experience.

### Can I play YL Killer Sudoku offline?

Yes, YL Killer Sudoku can be played offline, allowing you to enjoy puzzles without an internet connection.

### What are the difficulty levels in YL Killer Sudoku?

YL Killer Sudoku features six difficulty levels: Easy, Normal, Medium, Difficult, Expert, and Extreme, with 1000 questions for each.

### What are the rules of Killer Sudoku in this app?

In YL Killer Sudoku, numbers cannot repeat in rows, columns, or boxes. Each cage, marked by dashed lines, shows a sum for its digits, which must also be unique within that cage.

### What helpful features does YL Killer Sudoku offer?

The app supports group prompts, step-by-step hints, one-click marking of all candidate numbers, and independent marking and drawing for a better user experience.

### How much does YL Killer Sudoku cost?

YL Killer Sudoku is a paid app, available for $0.99.

### On which devices can I play YL Killer Sudoku?

YL Killer Sudoku is supported on iPhone and iPad devices.

## Version history (last 3 releases)

### 1.1.0 — 2026-03-19

Fix issue in game page

### 1.0.1 — 2026-02-12

分组提示可标记删除

### 1.0.0 — 2026-01-30

No release notes.

## 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.*