# Chess vs Dr. Unblock

The clearest difference is review sentiment: Chess at 70% against Dr. Unblock's 0%. Chess also leads on rating (4.7 vs 2.0) and ads (none vs shown). Dr. Unblock's advantage is in-app purchases (none vs 4). On price, device support and iOS requirement there is nothing between them.

Both are free to download. Chess sells 4 one-off in-app purchases. Dr. Unblock asks for nothing beyond the download.

Chess holds the better App Store score, 4.7 against 2.0. That said, the two scores are not equally well evidenced: Chess has 39K ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 70% of Chess's written reviews are positive against 0% of Dr. Unblock's.

Chess ships an update every 6 weeks, Dr. Unblock every 6 months. The most recent releases landed on October 26, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Chess | Dr. Unblock |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (39K ratings)](https://appshunter.io/ios/app/chess/id319305999/reviews)** | [2.0 (1 ratings)](https://appshunter.io/ios/app/dr-unblock/id1489133720/reviews) |
| Number of ratings | **39K** | 1 |
| Positive reviews | **70.2% of reviews** | 0.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | **Every 6 weeks** | Every 6 months |
| Monetization | Free with in-app purchases | **Ad-supported** |
| Size | 65 MB | 21 MB |
| Requires iOS | 12.4 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Vintolo Ltd](https://appshunter.io/developer/1453865533) | [SUD Inc.](https://appshunter.io/developer/453469451) |

## What reviewers say

### Chess

[App page](https://appshunter.io/ios/app/chess/id319305999)

Engage in the classic game of chess with customizable graphics and multiple difficulty levels. Play against AI or a friend, with features like move undo, hints, and time controls. Enjoy a rich chess experience with detailed game history and board customization.

**Highlights:** HD graphics, 5 difficulty levels, Hint option, Play against computer or friend, 2D and 3D themes, Unlimited undo moves, Time control options

**Features:** Vision Pro support

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 10 hints | $4.99 | one-time |
| 45 hints | $19.99 | one-time |
| 125 hints | $49.99 | one-time |
| 200 hints | $69.99 | one-time |

**What reviewers like**

- 👍 Great for beginners
- 🚀 Smooth gameplay
- 💡 Helpful puzzles and hints
- 🎨 Customizable chess sets
- 🎮 Fun and challenging

**What reviewers complain about**

- 🐛 Glitchy pawn movement
- 🤖 AI too easy even on hard mode
- ⏱️ Stalemate issues
- 💰 Paid hints for puzzles
- 🔁 Repetitive AI moves

**Reported bugs**

- Incorrect stalemate detection
- Pieces disappearing or moving incorrectly
- Compatibility issues on older devices

**Requested features**

- Ability to replay puzzles
- Undo/redo move functionality
- Online/multiplayer mode
- More advanced AI difficulty
- Improved stalemate detection


### Dr. Unblock

[App page](https://appshunter.io/ios/app/dr-unblock/id1489133720)

Slide wooden blocks to free the red block in this addictive puzzle game. It offers a simple yet challenging experience for players of all ages. Test your logic and problem-solving skills.

**Highlights:** Sliding block puzzles, Addictive gameplay, Logic challenges, Simple controls, Unblock the red block

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

**In-app purchases:** none


## Frequently asked questions

### Is Chess free?

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

### Is Dr. Unblock free?

Dr. Unblock is free to download, with no in-app purchases.

### Which has better reviews, Chess or Dr. Unblock?

Chess is rated higher. Chess averages 4.7 out of 5 from 39K ratings, while Dr. Unblock averages 2.0 from 1 ratings.

### Do Chess or Dr. Unblock have ads?

Dr. Unblock shows ads; Chess does not.

### Which is updated more often, Chess or Dr. Unblock?

Chess ships an update every 6 weeks, and Dr. Unblock every 6 months. Most recently, Chess was updated on October 26, 2026 and Dr. Unblock on October 24, 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.*