# Crazy Maths. vs 4321 De

The clearest difference is ads: Crazy Maths. at none against 4321 De's shown. Crazy Maths. also leads on iOS requirement (12.0 vs 15.0). 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 | Crazy Maths. | 4321 De |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/crazy-maths/id963527104/reviews)** | — |
| Number of ratings | **2** | — |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 64 months | — |
| Monetization | Free | — |
| Size | 26 MB | 67 MB |
| Requires iOS | **12.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Fernando Gonzalez Frias](https://appshunter.io/developer/582325220) | [Nguyen Mau Hoang](https://appshunter.io/developer/869174012) |

## What reviewers say

### Crazy Maths.

[App page](https://appshunter.io/ios/app/crazy-maths/id963527104)

This app offers a fun way to learn and practice fundamental math skills. It covers addition, subtraction, multiplication, division, and number theory concepts through engaging exercises and game modes. Designed for self-improvement, it helps build arithmetic fluency and mental math strategies.

**Highlights:** Basic arithmetic practice, Number theory concepts, Multiplication table learning, Mental math strategies, Multiple difficulty levels, High scores and awards, Fun animations

**Features:** macOS Compatibility

**In-app purchases:** none


### 4321 De

[App page](https://appshunter.io/ios/app/4321-de-merge/id6756211716)

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

**In-app purchases:** none


## Frequently asked questions

### Is Crazy Maths. free?

Crazy Maths. is free to download, with no in-app purchases.

### Is 4321 De free?

4321 De is free to download, with no in-app purchases.

### Do Crazy Maths. or 4321 De have ads?

4321 De shows ads; Crazy Maths. 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.*