# Calm Focus vs Cortex

The clearest difference is in-app purchases: Calm Focus at none against Cortex's 3. On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Cortex sells 3 in-app purchases, starting at $6.99 per month. Calm Focus asks for nothing beyond the download.

## The numbers

| Metric | Calm Focus | Cortex |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | — | Every 5 days |
| Size | 5 MB | 78 MB |
| Requires iOS | **15.0** | 16.4 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 12+ |
| Developer | [小斌 吴](https://appshunter.io/developer/1721307890) | [Dmitry Afanasyev](https://appshunter.io/developer/1788884993) |

## What reviewers say

### Calm Focus

[App page](https://appshunter.io/ios/app/calm-focus/id6749935140)

**Features:** macOS Compatibility

**In-app purchases:** none


### Cortex

[App page](https://appshunter.io/ios/app/cortex-ai-focus-timer/id6759869031)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| AI Focus Timer Premium | $6.99 | per month |
| AI Focus Timer Premium | $49.99 | per year |
| AI Focus Timer Lifetime | $99.99 | one-time |


## Frequently asked questions

### Is Calm Focus free?

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

### Is Cortex free?

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

### Do Calm Focus or Cortex have ads?

Neither Calm Focus nor Cortex 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.*