# Stop Brainrot vs M3 Mental Math

The clearest difference is iOS requirement: M3 Mental Math at 15 against Stop Brainrot's 18.0. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Stop Brainrot sells 3 in-app purchases, starting at $4.99 per 7 days and M3 Mental Math sells 2 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.

## The numbers

| Metric | Stop Brainrot | M3 Mental Math |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | — | Every 6 weeks |
| Size | 655 MB | 94 MB |
| Requires iOS | 18.0 | **15** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Salavat Shirgaleev](https://appshunter.io/developer/1759086291) | [Institut Dr. Ehrlich e.K.](https://appshunter.io/developer/1601127216) |

## What reviewers say

### Stop Brainrot

[App page](https://appshunter.io/ios/app/stop-brainrot-reset-brain/id6739454033)

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| All Access | $4.99 | per 7 days |
| All Access | $9.99 | per month |
| All Access | $29.99 | per year |


### M3 Mental Math

[App page](https://appshunter.io/ios/app/m3-mental-math-learn-math/id6759405058)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Version (monthly) | $1.99 | per month |
| Pro Version (annually) | $12.99 | per year |


## Frequently asked questions

### Is Stop Brainrot free?

Stop Brainrot is free to download, with in-app purchases available.

### Is M3 Mental Math free?

M3 Mental Math is free to download, with in-app purchases available.

### Do Stop Brainrot or M3 Mental Math have ads?

Neither Stop Brainrot nor M3 Mental Math 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.*