# JavaScript Studio Pro vs TK Smart Battery

The clearest difference is price: TK Smart Battery at Free against JavaScript Studio Pro's $12.99. TK Smart Battery also leads on update cadence (every 6 weeks vs every 20 months). On ads, in-app purchases, device support and iOS requirement there is nothing between them.

TK Smart Battery is free to download; JavaScript Studio Pro costs $12.99 up front. Neither carries in-app purchases, so what you see is what you pay.

JavaScript Studio Pro ships an update every 20 months, TK Smart Battery every 6 weeks. The most recent releases landed on October 14, 2026 and October 4, 2026 respectively.

## The numbers

| Metric | JavaScript Studio Pro | TK Smart Battery |
| --- | --- | --- |
| Price | $12.99 | **Free** |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/javascript-studio-pro/id1533537039/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 20 months | **Every 6 weeks** |
| Monetization | Paid | — |
| Size | 33 MB | 30 MB |
| Requires iOS | 10.0 | **9.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Arrowat LLC](https://appshunter.io/developer/1358562640) | [应刚 郑](https://appshunter.io/developer/1446858821) |

## 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


### TK Smart Battery

[App page](https://appshunter.io/ios/app/tk-smart-battery/id1562610645)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is JavaScript Studio Pro free?

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

### Is TK Smart Battery free?

TK Smart Battery is free to download, with no in-app purchases.

### Do JavaScript Studio Pro or TK Smart Battery have ads?

Neither JavaScript Studio Pro nor TK Smart Battery shows ads.

### Which is updated more often, JavaScript Studio Pro or TK Smart Battery?

JavaScript Studio Pro ships an update every 20 months, and TK Smart Battery every 6 weeks. Most recently, JavaScript Studio Pro was updated on October 14, 2026 and TK Smart Battery on October 4, 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.*