# 4 vs AI

The clearest difference is iOS requirement: AI at 13.0 against 4's 17.0. On price, ads, 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 | 4 | AI |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 weeks | — |
| Size | 23 MB | 92 MB |
| Requires iOS | 17.0 | **13.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Tom App Works](https://appshunter.io/developer/1874760041) | [EIJI MAEDA](https://appshunter.io/developer/1896726542) |

## What reviewers say

### 4

[App page](https://appshunter.io/ios/app/4-color-puzzle-simulator/id6759387342)

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

**In-app purchases:** none


### AI

[App page](https://appshunter.io/ios/app/ai/id6770237746)

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

**In-app purchases:** none


## Frequently asked questions

### Is 4 free?

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

### Is AI free?

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

### Do 4 or AI have ads?

Neither 4 nor AI shows ads.

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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.*