# ChatAI vs ChatPro4

The clearest difference is update cadence: ChatAI at weekly against ChatPro4's every 3 weeks. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. ChatAI sells 6 in-app purchases, starting at $4.99 per 7 days and ChatPro4 sells 3 in-app purchases, starting at $4.99 per 7 days. Whichever you choose, the download price is not the number that matters.

ChatAI ships an update weekly, ChatPro4 every 3 weeks. The most recent releases landed on September 19, 2026 and June 23, 2026 respectively.

## The numbers

| Metric | ChatAI | ChatPro4 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (2 ratings)](https://appshunter.io/ios/app/chatpro4-ai-chatbot/id6472479300/reviews)** |
| Number of ratings | — | **2** |
| In-app purchases | Yes | Yes |
| Ads | Yes | Yes |
| Update frequency | **Weekly** | Every 3 weeks |
| Monetization | — | Free with in-app purchases |
| Size | 26 MB | 17 MB |
| Requires iOS | 13.0 | 13.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 17+ | 12+ |
| Developer | [Hangzhou Zero Zone Technology Co., Ltd.](https://appshunter.io/developer/1664010128) | [Chengdu Qijie Information Technology Co., Ltd](https://appshunter.io/developer/1717060398) |

## What reviewers say

### ChatAI

[App page](https://appshunter.io/ios/app/chatai-chat-and-write-robot/id1672705850)

**Features:** macOS Compatibility

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly member | $4.99 | per 7 days |
| 年度会员-3天试用 | $12.99 | per year |
| Quarterly member | $14.99 | per 3 months |
| Monthly member | $19.99 | per month |
| Annual member | $39.99 | per year |
| Permanent member | $39.99 | one-time |


### ChatPro4

[App page](https://appshunter.io/ios/app/chatpro4-ai-chatbot/id6472479300)

Engage in natural conversations with an AI assistant for advice, information, and creative tasks. It offers writing assistance, translation, planning, and programming help, powered by an advanced AI model with vision and speech-to-text capabilities.

**Highlights:** Advanced AI model (4.0), Vision modeling for picture conversations, Speech-to-text for efficiency, Streaming output for reduced waiting, Role-playing and dialog scenarios, Contextualization and multi-line switching

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Plus | $4.99 | per 7 days |
| Monthly Plus | $11.90 | per month |
| Annual Plus | $89.99 | per year |


## Frequently asked questions

### Is ChatAI free?

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

### Is ChatPro4 free?

ChatPro4 is free to download, with in-app purchases available.

### Do ChatAI or ChatPro4 have ads?

Both ChatAI and ChatPro4 show ads.

### Which is updated more often, ChatAI or ChatPro4?

ChatAI ships an update weekly, and ChatPro4 every 3 weeks. Most recently, ChatAI was updated on September 19, 2026 and ChatPro4 on June 23, 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.*