# AI Assistant vs ChatAI

The clearest difference is update cadence: AI Assistant at every 3 days against ChatAI's weekly. ChatAI's advantage is iOS requirement (13.0 vs 17.0). On price, ads, in-app purchases and device support there is nothing between them.

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

AI Assistant ships an update every 3 days, ChatAI weekly. The most recent releases landed on June 1, 2026 and September 19, 2026 respectively.

## The numbers

| Metric | AI Assistant | ChatAI |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.0 (4 ratings)](https://appshunter.io/ios/app/ai-assistant-help-think-deeply/id1663434438/reviews)** | — |
| Number of ratings | **4** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | Yes | Yes |
| Update frequency | **Every 3 days** | Weekly |
| Monetization | Free with in-app purchases | — |
| Size | 23 MB | 26 MB |
| Requires iOS | 17.0 | **13.0** |
| Devices | iPhone | **iPhone, iPod** |
| Age rating | 17+ | 17+ |
| Developer | [佳俊 顾](https://appshunter.io/developer/723276801) | [Hangzhou Zero Zone Technology Co., Ltd.](https://appshunter.io/developer/1664010128) |

## What reviewers say

### AI Assistant

[App page](https://appshunter.io/ios/app/ai-assistant-help-think-deeply/id1663434438)

Engage in dynamic conversations, get answers to countless questions, and explore topics from writing to science. This tool can even display images within its responses, offering a rich and interactive experience.

**Highlights:** AI-powered chat, Answer thousands of questions, Writing assistance, Translation capabilities, Knowledge exploration, Image display in answers

**Features:** macOS Compatibility

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 5000 | $0.99 | one-time |
| 1500 | $0.99 | one-time |
| 10000 | $1.99 | one-time |
| 20000 | $2.99 | one-time |
| 30000 | $4.99 | one-time |
| 50000 | $6.99 | one-time |


### 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 |


## Frequently asked questions

### Is AI Assistant free?

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

### Is ChatAI free?

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

### Do AI Assistant or ChatAI have ads?

Both AI Assistant and ChatAI show ads.

### Which is updated more often, AI Assistant or ChatAI?

AI Assistant ships an update every 3 days, and ChatAI weekly. Most recently, AI Assistant was updated on June 1, 2026 and ChatAI on September 19, 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.*