# COLFRAY JP vs Math Rush

The clearest difference is ads: COLFRAY JP at none against Math Rush's shown. Math Rush's advantage is iOS requirement (12.0 vs 15.1). On price, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

## The numbers

| Metric | COLFRAY JP | Math Rush |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 2 months | — |
| Size | 37 MB | 25 MB |
| Requires iOS | 15.1 | **12.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Uplift Educational Solutions](https://appshunter.io/developer/1793846825) | [Victor Garcia](https://appshunter.io/developer/1809327785) |

## What reviewers say

### COLFRAY JP

[App page](https://appshunter.io/ios/app/colfray-jp/id6471982954)

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

**In-app purchases:** none


### Math Rush

[App page](https://appshunter.io/ios/app/math-rush-speed-drills/id6746172159)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is COLFRAY JP free?

COLFRAY JP is free to download, with no in-app purchases.

### Is Math Rush free?

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

### Do COLFRAY JP or Math Rush have ads?

Math Rush shows ads; COLFRAY JP 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.*