# ChatAI vs Caty App

The clearest difference is in-app purchases: ChatAI at none against Caty App's 1. Caty App's advantage is update cadence (every 2 months vs every 5 months) and device support (4 vs 2). On price and ads there is nothing between them.

Both are free to download. Caty App sells 1 one-off in-app purchase. ChatAI asks for nothing beyond the download.

ChatAI ships an update every 5 months, Caty App every 2 months. The most recent releases landed on October 28, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | ChatAI | Caty App |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 5 months | **Every 2 months** |
| Size | 2 MB | 71 MB |
| Requires iOS | 26.0 | **15.5** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod, Mac** |
| Age rating | 4+ | 17+ |
| Developer | [Saurabh Sharma](https://appshunter.io/developer/1863451331) | [OU Catyonic](https://appshunter.io/developer/1863920797) |

## What reviewers say

### ChatAI

[App page](https://appshunter.io/ios/app/chatai-on-device-ai/id6759482575)

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

**In-app purchases:** none


### Caty App

[App page](https://appshunter.io/ios/app/caty-app/id6759576079)

**Features:** Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 100 AI Messages | $0.99 | one-time |


## Frequently asked questions

### Is ChatAI free?

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

### Is Caty App free?

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

### Do ChatAI or Caty App have ads?

Neither ChatAI nor Caty App shows ads.

### Which is updated more often, ChatAI or Caty App?

ChatAI ships an update every 5 months, and Caty App every 2 months. Most recently, ChatAI was updated on October 28, 2026 and Caty App on October 25, 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.*