# Math Brain Up vs Fold Books

The clearest difference is rating: Fold Books at 5.0 against Math Brain Up's 4.5. Fold Books also leads on in-app purchases (none vs 1) and device support (3 vs 1). Math Brain Up's advantage is ads (none vs shown) and ratings volume (11 vs 1). On price there is nothing between them.

Both are free to download. Math Brain Up sells 1 one-off in-app purchase. Fold Books asks for nothing beyond the download.

Fold Books holds the better App Store score, 5.0 against 4.5. That said, the two scores are not equally well evidenced: Math Brain Up has 11 ratings behind it against 1, so its average is the more settled of the two.

## The numbers

| Metric | Math Brain Up | Fold Books |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.5 (11 ratings)](https://appshunter.io/ios/app/math-brain-up/id1519141500/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/fold-books/id6503129979/reviews)** |
| Number of ratings | **11** | 1 |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | Every 4 days | — |
| Monetization | Free with in-app purchases | **Ad-supported** |
| Size | 34 MB | 101 MB |
| Requires iOS | 18.6 | **12.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Yin Kai Leung Joseph](https://appshunter.io/developer/843708119) | [bugra bayrak](https://appshunter.io/developer/1457322401) |

## What reviewers say

### Math Brain Up

[App page](https://appshunter.io/ios/app/math-brain-up/id1519141500)

This math logic puzzle challenges players to fill in blanks with single digits to solve equations. It requires strategic thinking, quick reflexes, and logical skills. Offers millions of unique puzzles with a game timer and error highlighting.

**Highlights:** Math logic puzzles, Solve equations by filling blanks, Millions of unique puzzles, Game timer, Error highlighting, Answer provided for each puzzle

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Full Version | $0.99 | one-time |


### Fold Books

[App page](https://appshunter.io/ios/app/fold-books/id6503129979)

Arrange colorful books on shelves by closing them. A relaxing puzzle game focused on organization and color matching.

**Highlights:** Book arrangement puzzles, Color matching mechanics, Shelf organization, Relaxing gameplay, Simple controls

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Math Brain Up free?

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

### Is Fold Books free?

Fold Books is free to download, with no in-app purchases.

### Which has better reviews, Math Brain Up or Fold Books?

Fold Books is rated higher. Math Brain Up averages 4.5 out of 5 from 11 ratings, while Fold Books averages 5.0 from 1 ratings.

### Do Math Brain Up or Fold Books have ads?

Fold Books shows ads; Math Brain Up does not.

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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.*