# Fast AI vs Chat AI

The clearest difference is device support: Fast AI at 3 against Chat AI's 1. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Fast AI sells 1 in-app purchase, starting at $5.99 per 7 days and Chat AI sells 2 in-app purchases, starting at $5.99 per 7 days. Whichever you choose, the download price is not the number that matters.

Fast AI ships an update every 2 weeks, Chat AI fortnightly. The most recent releases landed on October 18, 2026 and October 27, 2026 respectively.

## The numbers

| Metric | Fast AI | Chat AI |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.0 (3 ratings)](https://appshunter.io/ios/app/fast-ai-chatbot-assistant/id1663617334/reviews)** | — |
| Number of ratings | **3** | — |
| In-app purchases | Yes | Yes |
| Ads | Yes | Yes |
| Update frequency | **Every 2 weeks** | Fortnightly |
| Monetization | Free with in-app purchases | — |
| Size | 150 MB | 23 MB |
| Requires iOS | **15.1** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 17+ |
| Developer | [Advenworks Ltd.](https://appshunter.io/developer/329900469) | [Vladislav Mikheenko](https://appshunter.io/developer/1459232915) |

## What reviewers say

### Fast AI

[App page](https://appshunter.io/ios/app/fast-ai-chatbot-assistant/id1663617334)

This AI chatbot offers personalized conversations and instant assistance using advanced natural language processing. Powered by ChatGPT, it can help with daily tasks, answer questions, provide writing assistance, and engage in conversations.

**Highlights:** AI-powered conversations, Instant assistance, Natural language processing, Writing help, Text completion, Powered by ChatGPT

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Fast.ai Pro | $5.99 | per 7 days |


### Chat AI

[App page](https://appshunter.io/ios/app/chat-ai-chatbot-and-assistant/id6447901464)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Week | $5.99 | per 7 days |
| Premium Month | $14.99 | per month |


## Frequently asked questions

### Is Fast AI free?

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

### Is Chat AI free?

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

### Do Fast AI or Chat AI have ads?

Both Fast AI and Chat AI show ads.

### Which is updated more often, Fast AI or Chat AI?

Fast AI ships an update every 2 weeks, and Chat AI fortnightly. Most recently, Fast AI was updated on October 18, 2026 and Chat AI on October 27, 2026.

---

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