# Calm Brain | Relax vs MechaniCool

The clearest difference is price: MechaniCool at Free against Calm Brain | Relax's $39.99. MechaniCool also leads on in-app purchases (none vs 2) and iOS requirement (13.0 vs 15.1). Calm Brain | Relax's advantage is update cadence (daily vs every 2 months). On ads and device support there is nothing between them.

MechaniCool is free to download; Calm Brain | Relax costs $39.99 up front. Calm Brain | Relax sells 2 in-app purchases, starting at $1.99 per 7 days. MechaniCool asks for nothing beyond the download.

Calm Brain | Relax ships an update daily, MechaniCool every 2 months. The most recent releases landed on October 25, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | Calm Brain | Relax | MechaniCool |
| --- | --- | --- |
| Price | $39.99 | **Free** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Daily** | Every 2 months |
| Size | 50 MB | 64 MB |
| Requires iOS | 15.1 | **13.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [RICKHIL PUNEET PRAKASH](https://appshunter.io/developer/1810186230) | [Nuve Home](https://appshunter.io/developer/1752266972) |

## What reviewers say

### Calm Brain | Relax

[App page](https://appshunter.io/ios/app/calm-brain-relax/id6742467180)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| AUTO renewable subscription | $1.99 | per 7 days |
| AUTO renewable subscription | $4.99 | per month |


### MechaniCool

[App page](https://appshunter.io/ios/app/mechanicool/id6749522545)

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

**In-app purchases:** none


## Frequently asked questions

### Is Calm Brain | Relax free?

Calm Brain | Relax costs $39.99, and also offers in-app purchases.

### Is MechaniCool free?

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

### Do Calm Brain | Relax or MechaniCool have ads?

Neither Calm Brain | Relax nor MechaniCool shows ads.

### Which is updated more often, Calm Brain | Relax or MechaniCool?

Calm Brain | Relax ships an update daily, and MechaniCool every 2 months. Most recently, Calm Brain | Relax was updated on October 25, 2026 and MechaniCool on October 28, 2026.

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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.*