# Brain vs Factor Fusion Puzzle

The clearest difference is in-app purchases: Factor Fusion Puzzle at none against Brain's 2. Brain's advantage is iOS requirement (13.0 vs 15.1). On price, ads and device support there is nothing between them.

Both are free to download. Brain sells 2 in-app purchases, starting at $2.99 per month. Factor Fusion Puzzle asks for nothing beyond the download.

## The numbers

| Metric | Brain | Factor Fusion Puzzle |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Daily | — |
| Size | 15 MB | 23 MB |
| Requires iOS | **13.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [YATB LLC](https://appshunter.io/developer/1621951581) | [Mir md habibullah](https://appshunter.io/developer/1801598141) |

## What reviewers say

### Brain

[App page](https://appshunter.io/ios/app/brain-mental-math-practice/id6472009003)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Math Problem Set Generator Pro | $2.99 | per month |
| Math Problem Set Generator Pro | $19.99 | per year |


### Factor Fusion Puzzle

[App page](https://appshunter.io/ios/app/factor-fusion-puzzle/id6743373858)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Brain free?

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

### Is Factor Fusion Puzzle free?

Factor Fusion Puzzle is free to download, with no in-app purchases.

### Do Brain or Factor Fusion Puzzle have ads?

Neither Brain nor Factor Fusion Puzzle shows ads.

---

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