# CortexOS vs Karuma

The clearest difference is in-app purchases: Karuma at none against CortexOS's 3. Karuma also leads on device support (3 vs 1) and iOS requirement (15.1 vs 17.0). On price, update cadence and ads there is nothing between them.

Both are free to download. CortexOS sells 3 in-app purchases, starting at $7.99 per month. Karuma asks for nothing beyond the download.

CortexOS ships an update every 5 days, Karuma every 4 days. The most recent releases landed on October 7, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | CortexOS | Karuma |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 5 days | **Every 4 days** |
| Size | 32 MB | 29 MB |
| Requires iOS | 17.0 | **15.1** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Orlin Ralinov Martinov](https://appshunter.io/developer/1876655175) | [BrainArts BV](https://appshunter.io/developer/6799699122) |

## What reviewers say

### CortexOS

[App page](https://appshunter.io/ios/app/cortexos/id6759070325)

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Monthly | $7.99 | per month |
| Premium Yearly | $49.99 | per year |
| Lifetime Access | $99.99 | one-time |


### Karuma

[App page](https://appshunter.io/ios/app/karuma/id6799699120)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is CortexOS free?

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

### Is Karuma free?

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

### Do CortexOS or Karuma have ads?

Neither CortexOS nor Karuma shows ads.

### Which is updated more often, CortexOS or Karuma?

CortexOS ships an update every 5 days, and Karuma every 4 days. Most recently, CortexOS was updated on October 7, 2026 and Karuma on October 12, 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.*