# Chatzi vs ChatBrain

The clearest difference is ads: Chatzi at none against ChatBrain's shown. Chatzi also leads on device support (4 vs 1). ChatBrain's advantage is rating (4.9 vs 4.6) and update cadence (every 2 days vs every 4 days). On price, review sentiment, ratings volume and in-app purchases there is nothing between them.

Both are free to download. Chatzi sells 2 in-app purchases, starting at $3.99 per month and ChatBrain sells 4 in-app purchases, starting at $3.99 per 7 days. Whichever you choose, the download price is not the number that matters.

ChatBrain holds the better App Store score, 4.9 against 4.6. Both are backed by a comparable volume of ratings — 18 and 11 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

Chatzi ships an update every 4 days, ChatBrain every 2 days. The most recent releases landed on October 24, 2026 and October 21, 2026 respectively.

## The numbers

| Metric | Chatzi | ChatBrain |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.6 (18 ratings)](https://appshunter.io/ios/app/chatzi-ai-assistant/id6447135174/reviews) | **[4.9 (11 ratings)](https://appshunter.io/ios/app/chatbrain-ai-chat-chatbot/id6741812112/reviews)** |
| Number of ratings | **18** | 11 |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 4 days | **Every 2 days** |
| Monetization | Freemium | Free with in-app purchases |
| Size | 23 MB | 65 MB |
| Requires iOS | 16 | 16.0 |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone |
| Age rating | 17+ | 17+ |
| Developer | [Do Tuan Anh](https://appshunter.io/developer/390664015) | [Gulf Bay Ventures LLC](https://appshunter.io/developer/1795738256) |

## What reviewers say

### Chatzi

[App page](https://appshunter.io/ios/app/chatzi-ai-assistant/id6447135174)

Engage in conversations with a personalized AI assistant powered by GPT. Choose from various assistant characters to suit your needs, whether for friendship, help, or casual chat. Enjoy quick and accurate responses in a beautifully designed interface.

**Highlights:** Personalized AI assistant, GPT-powered conversations, Multiple assistant characters, Intuitive design, Quick and accurate responses

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Monthly | $3.99 | per month |
| Pro Yearly | $24.99 | per year |


### ChatBrain

[App page](https://appshunter.io/ios/app/chatbrain-ai-chat-chatbot/id6741812112)

This AI assistant leverages advanced models to provide intelligent conversations, assist with writing and coding, generate images from descriptions, and simplify research. It offers a no-login experience for instant use, making it a versatile tool for creativity and productivity.

**Highlights:** Intelligent conversations and assistance, AI writing and editing tools, AI image generation, Coding and debugging help, Research and learning simplification, No login required

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Unlimited | $3.99 | per 7 days |
| Annual Premium | $24.99 | per year |
| ChatBrain Token Bundle | $5.99 | one-time |
| Lifetime Unlimited | $69.99 | one-time |


## Frequently asked questions

### Is Chatzi free?

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

### Is ChatBrain free?

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

### Which has better reviews, Chatzi or ChatBrain?

ChatBrain is rated higher. Chatzi averages 4.6 out of 5 from 18 ratings, while ChatBrain averages 4.9 from 11 ratings.

### Do Chatzi or ChatBrain have ads?

ChatBrain shows ads; Chatzi does not.

### Which is updated more often, Chatzi or ChatBrain?

Chatzi ships an update every 4 days, and ChatBrain every 2 days. Most recently, Chatzi was updated on October 24, 2026 and ChatBrain on October 21, 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.*