# Math Challenge vs Blob Merge 3D

Math Challenge and Blob Merge 3D both sit at 3.7 stars, but that hides the real split: 100% of Math Challenge's written reviews are positive against 22% of Blob Merge 3D's. Math Challenge also leads on in-app purchases (none vs 1) and iOS requirement (11.0 vs 14.0). Blob Merge 3D's advantage is ratings volume (2.3K vs 10). On price, rating, update cadence and ads there is nothing between them.

Both are free to download. Blob Merge 3D sells 1 one-off in-app purchase. Math Challenge asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 3.7 for Math Challenge against 3.6 for Blob Merge 3D. That said, the two scores are not equally well evidenced: Blob Merge 3D has 2.3K ratings behind it against 10, so its average is the more settled of the two. Written reviews are what separate them: 100% of Math Challenge's written reviews are positive against 22% of Blob Merge 3D's.

Math Challenge ships an update every 2 months, Blob Merge 3D monthly. The most recent releases landed on October 24, 2026 and October 21, 2026 respectively.

## The numbers

| Metric | Math Challenge | Blob Merge 3D |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.7 (10 ratings)](https://appshunter.io/ios/app/math-challenge-workout-brain/id1220523089/reviews)** | [3.6 (2.3K ratings)](https://appshunter.io/ios/app/blob-merge-3d/id1563416758/reviews) |
| Number of ratings | 10 | **2.3K** |
| Positive reviews | **100.0% of reviews** | 22.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 2 months | **Monthly** |
| Monetization | **Ad-supported** | Free with in-app purchases |
| Size | 56 MB | 296 MB |
| Requires iOS | **11.0** | 14.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 12+ |
| Developer | [Bro Dots Co., Ltd](https://appshunter.io/developer/1119379227) | [Voodoo](https://appshunter.io/developer/714804730) |

## What reviewers say

### Math Challenge

[App page](https://appshunter.io/ios/app/math-challenge-workout-brain/id1220523089)

Engage in a fun math game designed to boost your cognitive skills. Solve addition, subtraction, multiplication, and division problems to improve decision-making and increase your score. Suitable for all ages, it offers a simple interface for quick practice.

**Highlights:** Addition practice, Subtraction practice, Multiplication practice, Division practice, Brain workout, Fast decision making

**Features:** macOS Compatibility

**In-app purchases:** none


### Blob Merge 3D

[App page](https://appshunter.io/ios/app/blob-merge-3d/id1563416758)

Merge colorful blobs to achieve the highest score possible. Enjoy intuitive controls and addictive gameplay that keeps you engaged.

**Highlights:** Blob merging gameplay, High score challenges, Intuitive slide controls, Addictive mechanics

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| No Ads | $2.99 | one-time |

**What reviewers like**

- 😊 Satisfying gameplay
- 🎨 Fun visuals
- ⏱️ Relaxing time-killer

**What reviewers complain about**

- 💸 Excessive ads
- 🤖 Ads still present after paid ad removal
- 🐛 Glitches and crashes
- 🤔 Recent gameplay changes disliked

**Reported bugs**

- Gameplay freezes
- Progress loss after reinstallation
- Compatibility issues with newer devices

**Requested features**

- Reduce ad frequency
- Restore previous gameplay mechanics
- Add more customization options


## Frequently asked questions

### Is Math Challenge free?

Math Challenge is free to download, with no in-app purchases.

### Is Blob Merge 3D free?

Blob Merge 3D is free to download, with in-app purchases available.

### Which has better reviews, Math Challenge or Blob Merge 3D?

Math Challenge is rated higher. Math Challenge averages 3.7 out of 5 from 10 ratings, while Blob Merge 3D averages 3.6 from 2.3K ratings.

### Do Math Challenge or Blob Merge 3D have ads?

Both Math Challenge and Blob Merge 3D show ads.

### Which is updated more often, Math Challenge or Blob Merge 3D?

Math Challenge ships an update every 2 months, and Blob Merge 3D monthly. Most recently, Math Challenge was updated on October 24, 2026 and Blob Merge 3D on October 21, 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.*