# Sudoku World vs Find Differences

The clearest difference is in-app purchases: Find Differences at none against Sudoku World's 1. Find Differences also leads on ads (none vs shown) and rating (5.0 vs 4.7). Sudoku World's advantage is ratings volume (1.5K vs 2) and update cadence (every 4 months vs every 19 months). On price and device support there is nothing between them.

Both are free to download. Sudoku World sells 1 one-off in-app purchase. Find Differences asks for nothing beyond the download.

Find Differences holds the better App Store score, 5.0 against 4.7. That said, the two scores are not equally well evidenced: Sudoku World has 1.5K ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 85% of Sudoku World's written reviews are positive against 100% of Find Differences's.

Sudoku World ships an update every 4 months, Find Differences every 19 months. The most recent releases landed on September 24, 2026 and June 25, 2026 respectively.

## The numbers

| Metric | Sudoku World | Find Differences |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.7 (1.5K ratings)](https://appshunter.io/ios/app/sudoku-world-brainstorming/id463419280/reviews) | **[5.0 (2 ratings)](https://appshunter.io/ios/app/find-differences-quickly/id1085617556/reviews)** |
| Number of ratings | **1.5K** | 2 |
| Positive reviews | 84.5% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Every 4 months** | Every 19 months |
| Monetization | Free with in-app purchases | **Free** |
| Size | 81 MB | 22 MB |
| Requires iOS | 15.6 | **9.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 12+ |
| Developer | [Chaohsien Lee](https://appshunter.io/developer/438073768) | [昶燎 张](https://appshunter.io/developer/399224946) |

## What reviewers say

### Sudoku World

[App page](https://appshunter.io/ios/app/sudoku-world-brainstorming/id463419280)

Play an unlimited number of randomly generated Sudoku puzzles with various new puzzle types and difficulty levels. Enjoy multiplayer challenges, track your progress, and utilize smart tools for an enhanced experience.

**Highlights:** Unlimited randomly generated puzzles, Multiple Sudoku variants (X, Super, Jigsaw, 16x16, Samurai), Multiplayer mode, Five difficulty levels, Save/Load puzzles, Smart note-taking and eraser, Customizable backgrounds

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Disable Ads | $1.99 | one-time |

**What reviewers like**

- 👍 Great game
- 🚀 Challenging levels
- 💡 Variety of Sudoku types
- 👍 Helpful features (pencil marks, auto-fill)
- 👍 Good for brain exercise

**What reviewers complain about**

- 🐛 Freezes/crashes
- 🐛 Unreliable saving/progress tracking
- 🔍 Cluttered/confusing UI
- 🔍 Ads can be intrusive

**Reported bugs**

- Game freezes or crashes frequently
- Progress/scores not saving properly
- UI elements overlapping or hard to use

**Requested features**

- Add ability to turn off/customize certain features
- Improve save/resume functionality
- Optimize performance on older devices
- Add more customization options (themes, layouts, etc.)


### Find Differences

[App page](https://appshunter.io/ios/app/find-differences-quickly/id1085617556)

Engage in a visual puzzle game where you spot differences between two images within a time limit. Earn points by completing tasks and unlock new content. Features a unique shooting mode for bonus points.

**Highlights:** Spot differences between images, Timed challenges, Earn reward points, Unlock new content, Shooting mode for bonus points, New picture updates

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Sudoku World free?

Sudoku World is free to download, with in-app purchases available.

### Is Find Differences free?

Find Differences is free to download, with no in-app purchases.

### Which has better reviews, Sudoku World or Find Differences?

Find Differences is rated higher. Sudoku World averages 4.7 out of 5 from 1.5K ratings, while Find Differences averages 5.0 from 2 ratings.

### Do Sudoku World or Find Differences have ads?

Sudoku World shows ads; Find Differences does not.

### Which is updated more often, Sudoku World or Find Differences?

Sudoku World ships an update every 4 months, and Find Differences every 19 months. Most recently, Sudoku World was updated on September 24, 2026 and Find Differences on June 25, 2026.

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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.*