# ThreeAI vs Eira

The clearest difference is device support: ThreeAI at 3 against Eira's 1. ThreeAI also leads on iOS requirement (15.5 vs 26.0). On price, ads and in-app purchases there is nothing between them.

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

## The numbers

| Metric | ThreeAI | Eira |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Size | 8 MB | 1 MB |
| Requires iOS | **15.5** | 26.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 12+ | 12+ |
| Developer | [Jeffrey Lawrence](https://appshunter.io/developer/1879082478) | [Dulio Denis](https://appshunter.io/developer/528246509) |

## What reviewers say

### ThreeAI

[App page](https://appshunter.io/ios/app/threeai/id6759503039)

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

**In-app purchases:** none


### Eira

[App page](https://appshunter.io/ios/app/eira-private-ai-chat/id6789440571)

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

**In-app purchases:** none


## Frequently asked questions

### Is ThreeAI free?

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

### Is Eira free?

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

### Do ThreeAI or Eira have ads?

Neither ThreeAI nor Eira 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.*