# Fast AI vs Unichat

The clearest difference is rating: Fast AI at 3.0 against Unichat's 1.0. Fast AI also leads on device support and ratings volume (3 vs 1). Unichat's advantage is in-app purchases (none vs 1) and iOS requirement (13.4 vs 15.1). On price there is nothing between them.

Both are free to download. Fast AI sells 1 in-app purchase, starting at $5.99 per 7 days. Unichat asks for nothing beyond the download.

Fast AI holds the better App Store score, 3.0 against 1.0. Both are backed by a comparable volume of ratings — 3 and 1 respectively.

## The numbers

| Metric | Fast AI | Unichat |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.0 (3 ratings)](https://appshunter.io/ios/app/fast-ai-chatbot-assistant/id1663617334/reviews)** | [1.0 (1 ratings)](https://appshunter.io/ios/app/unichat-multi-ai-chatbot/id6476830185/reviews) |
| Number of ratings | **3** | 1 |
| In-app purchases | Yes | **No** |
| Ads | Yes | — |
| Update frequency | Every 2 weeks | — |
| Monetization | Free with in-app purchases | **Free** |
| Size | 150 MB | 43 MB |
| Requires iOS | 15.1 | **13.4** |
| Devices | **iPhone, iPad, iPod** | — |
| Age rating | 4+ | 12+ |
| Developer | [Advenworks Ltd.](https://appshunter.io/developer/329900469) | [Biz 4 U LTD](https://appshunter.io/developer/1727923032) |

## 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 |


### Unichat

[App page](https://appshunter.io/ios/app/unichat-multi-ai-chatbot/id6476830185)

Access multiple advanced AI models, including ChatGPT4 and Stable Diffusion, through a single, user-friendly application. This tool acts as your AI copilot, enhancing productivity by providing instant access to powerful generative AI capabilities for text and image creation.

**Highlights:** Access ChatGPT4, Claude2, Stable Diffusion & More, Generate images with SDXL instantly, Fastest way to use AI from anywhere, Context saved between models, Control all AI models from one account, Supports Code Interpreter

**In-app purchases:** none


## Frequently asked questions

### Is Fast AI free?

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

### Is Unichat free?

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

### Which has better reviews, Fast AI or Unichat?

Fast AI is rated higher. Fast AI averages 3.0 out of 5 from 3 ratings, while Unichat averages 1.0 from 1 ratings.

---

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