# Cortex vs Onyx

Cortex and Onyx are too close to call on the numbers: across 5 compared parameters — price, ads, in-app purchases and device support among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

## The numbers

| Metric | Cortex | Onyx |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | Yes | Yes |
| Size | 7 MB | 29 MB |
| Requires iOS | **17.0** | 18.0 |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Pratik Poudel](https://appshunter.io/developer/1789053079) | [David Azancot](https://appshunter.io/developer/507868249) |

## What reviewers say

### Cortex

[App page](https://appshunter.io/ios/app/cortex-private-ai-assistant/id6759742402)

**Features:** macOS Compatibility

**In-app purchases:** none


### Onyx

[App page](https://appshunter.io/ios/app/onyx-private-ai-chat/id6770044762)

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

**In-app purchases:** none


## Frequently asked questions

### Is Cortex free?

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

### Is Onyx free?

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

### Do Cortex or Onyx have ads?

Both Cortex and Onyx show ads.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*