# Killer Sudoku vs 小挑战

The clearest difference is in-app purchases: Killer Sudoku at none against 小挑战's 4. Killer Sudoku also leads on device support. On price and iOS requirement there is nothing between them.

Both are free to download. 小挑战 sells 4 one-off in-app purchases. Killer Sudoku asks for nothing beyond the download.

## The numbers

| Metric | Killer Sudoku | 小挑战 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.9 (1.2K ratings)](https://appshunter.io/ios/app/killer-sudoku-puzzle-game/id1532839429/reviews)** | — |
| Number of ratings | **1.2K** | — |
| Positive reviews | 46.9% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | Yes | — |
| Update frequency | Every 6 weeks | — |
| Monetization | Ad-supported | — |
| Size | 222 MB | 3 MB |
| Requires iOS | 13.0 | 13.0 |
| Devices | **iPhone, iPad, iPod** | — |
| Age rating | 12+ | 4+ |
| Developer | [LI SAIHUA](https://appshunter.io/developer/1094636976) | [精豪 薛](https://appshunter.io/developer/1521407500) |

## What reviewers say

### Killer Sudoku

[App page](https://appshunter.io/ios/app/killer-sudoku-puzzle-game/id1532839429)

Engage your mind with a challenging logic number puzzle. Offers a variety of difficulty levels, from beginner to expert, with daily challenges and helpful hints. Exercise your brain and share your victories with friends.

**Highlights:** Thousands of puzzles, Daily challenges, Guided hints and notes, Multiple difficulty levels, Auto-save progress, Share victories

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none

**What reviewers like**

- 🎨 Color-coded interface
- 🧠 Engaging brain-teasing gameplay
- 🤓 Challenging for experienced players

**What reviewers complain about**

- 🤬 Excessive and intrusive ads
- 🔥 Overheating and battery drain issues
- 🐛 Frequent crashes and freezes
- 🤯 Disruptive ad placement during gameplay

**Reported bugs**

- Ads blocking gameplay and preventing return to game
- Progress loss after app crashes or ads
- Incompatibility issues causing overheating on some devices

**Requested features**

- Customizable color schemes
- Adjustable text/number size
- Undo/redo functionality with more steps
- Option to disable ads for a fee


### 小挑战

[App page](https://appshunter.io/ios/app/xgame/id6445865335)

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 渐变色游戏，提示功能 | $0.99 | one-time |
| 拼图游戏，AI 复原 | $0.99 | one-time |
| 催更作者，更新游戏 | $3.99 | one-time |
| 请作者看一场新电影 | $4.99 | one-time |


## Frequently asked questions

### Is Killer Sudoku free?

Killer Sudoku is free to download, with no in-app purchases.

### Is 小挑战 free?

小挑战 is free to download, with in-app purchases available.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*