# JavaScript Manual vs Dev Tool box

The clearest difference is ads: JavaScript Manual at none against Dev Tool box's shown. JavaScript Manual also leads on iOS requirement (15.0 vs 18.0). Dev Tool box's advantage is update cadence (every 3 weeks vs every 31 months). On price, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

JavaScript Manual ships an update every 31 months, Dev Tool box every 3 weeks. The most recent releases landed on September 20, 2026 and October 4, 2026 respectively.

## The numbers

| Metric | JavaScript Manual | Dev Tool box |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/javascript-manual/id6476828541/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 31 months | **Every 3 weeks** |
| Monetization | Free | — |
| Size | 34 MB | 4 MB |
| Requires iOS | **15.0** | 18.0 |
| Devices | iPhone, iPod | **iPhone, iPad, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [Hua Yang](https://appshunter.io/developer/1497666891) | [Seonggon Sim](https://appshunter.io/developer/1565259950) |

## What reviewers say

### JavaScript Manual

[App page](https://appshunter.io/ios/app/javascript-manual/id6476828541)

An offline, ad-free guide to JavaScript, covering its core guide, built-in objects, and Web API. Access comprehensive documentation without an internet connection.

**Highlights:** JavaScript guide, Built-in objects, Web API documentation, Offline access, Ad-free experience

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### Dev Tool box

[App page](https://appshunter.io/ios/app/dev-tool-box-developer-tools/id6749840624)

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is JavaScript Manual free?

JavaScript Manual is free to download, with no in-app purchases.

### Is Dev Tool box free?

Dev Tool box is free to download, with no in-app purchases.

### Do JavaScript Manual or Dev Tool box have ads?

Dev Tool box shows ads; JavaScript Manual does not.

### Which is updated more often, JavaScript Manual or Dev Tool box?

JavaScript Manual ships an update every 31 months, and Dev Tool box every 3 weeks. Most recently, JavaScript Manual was updated on September 20, 2026 and Dev Tool box 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.*