# 数学図鑑 vs FxR Box

The clearest difference is in-app purchases: FxR Box at none against 数学図鑑's 2. FxR Box also leads on iOS requirement (12.0 vs 17.0). On price there is nothing between them.

Both are free to download. 数学図鑑 sells 2 one-off in-app purchases. FxR Box asks for nothing beyond the download.

## The numbers

| Metric | 数学図鑑 | FxR Box |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | — |
| Update frequency | Every 2 weeks | — |
| Monetization | Free with in-app purchases | — |
| Size | 149 MB | 122 MB |
| Requires iOS | 17.0 | **12.0** |
| Devices | **iPhone** | — |
| Age rating | 4+ | 4+ |
| Developer | [Keisuke Minami](https://appshunter.io/developer/1719444621) | [Feelit Corporation](https://appshunter.io/developer/1145753016) |

## What reviewers say

### 数学図鑑

[App page](https://appshunter.io/ios/app/id6499109813)

This app uses animations and dynamic visuals to explain complex high school math concepts. It aims to make abstract ideas intuitive and engaging for students and educators alike. Explore calculus, geometry, and equations through visual learning.

**Highlights:** Animated explanations of math concepts, Dynamic visual representations, Covers calculus, geometry, and equations, Intuitive understanding of abstract ideas, Aids students and educators

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 広告の削除 | $1.99 | one-time |
| 広告の削除+開発者への支援 | $2.99 | one-time |


### FxR Box

[App page](https://appshunter.io/ios/app/fxr-box/id6535670091)

**In-app purchases:** none


## Frequently asked questions

### Is 数学図鑑 free?

数学図鑑 is free to download, with in-app purchases available.

### Is FxR Box free?

FxR Box is free to download, with no in-app purchases.

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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.*