# JavaScript Studio Pro vs ChatAI

The clearest difference is price: ChatAI at Free against JavaScript Studio Pro's $12.99. ChatAI also leads on update cadence (every 4 days vs every 20 months). JavaScript Studio Pro's advantage is in-app purchases (none vs 2) and iOS requirement (10.0 vs 15.0). On rating, ratings volume, ads and device support there is nothing between them.

ChatAI is free to download; JavaScript Studio Pro costs $12.99 up front. ChatAI sells 2 in-app purchases, starting at $2.99 per month. JavaScript Studio Pro asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 5.0 for JavaScript Studio Pro against 5.0 for ChatAI. Both are backed by a comparable volume of ratings — 1 and 1 respectively.

JavaScript Studio Pro ships an update every 20 months, ChatAI every 4 days. The most recent releases landed on October 14, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | JavaScript Studio Pro | ChatAI |
| --- | --- | --- |
| Price | $12.99 | **Free** |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/javascript-studio-pro/id1533537039/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/chatai-your-ai-assistant/id6448965735/reviews) |
| Number of ratings | 1 | 1 |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 20 months | **Every 4 days** |
| Monetization | Paid | **Freemium** |
| Size | 33 MB | 10 MB |
| Requires iOS | **10.0** | 15.0 |
| Devices | iPhone, iPad, iPod | **iPhone, iPad, iPod, Mac** |
| Age rating | 4+ | 17+ |
| Developer | [Arrowat LLC](https://appshunter.io/developer/1358562640) | [松明 张](https://appshunter.io/developer/1064830289) |

## What reviewers say

### JavaScript Studio Pro

[App page](https://appshunter.io/ios/app/javascript-studio-pro/id1533537039)

Develop web applications on your mobile device using JavaScript, CSS, and HTML. This tool offers error checking assistance as you code, ensuring you don't lose track of your ideas. Create and save your projects anywhere, anytime.

**Highlights:** Write JavaScript, CSS, HTML code, Create web applications, Error checking assistance, Save code and ideas, Mobile development environment

**Features:** macOS Compatibility

**In-app purchases:** none


### ChatAI

[App page](https://appshunter.io/ios/app/chatai-your-ai-assistant/id6448965735)

This AI-powered assistant answers questions and provides information using natural language. It offers a premium subscription for enhanced features and is available on multiple Apple devices.

**Highlights:** Natural language interaction, Intelligent question answering, Information provision, Premium subscription option, Cross-device compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $2.99 | per month |
| Yearly | $24.99 | per year |


## Frequently asked questions

### Is JavaScript Studio Pro free?

JavaScript Studio Pro costs $12.99, with no in-app purchases.

### Is ChatAI free?

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

### Which has better reviews, JavaScript Studio Pro or ChatAI?

JavaScript Studio Pro and ChatAI are both rated 5.0 out of 5 on the App Store, from 1 and 1 ratings respectively.

### Do JavaScript Studio Pro or ChatAI have ads?

Neither JavaScript Studio Pro nor ChatAI shows ads.

### Which is updated more often, JavaScript Studio Pro or ChatAI?

JavaScript Studio Pro ships an update every 20 months, and ChatAI every 4 days. Most recently, JavaScript Studio Pro was updated on October 14, 2026 and ChatAI on October 10, 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.*