# JavaScript Manual vs Right On Page Devtools

The clearest difference is update cadence: Right On Page Devtools at every 3 months against JavaScript Manual's every 31 months. On price, rating, review sentiment and ratings volume there is nothing between them.

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

On the App Store both sit at effectively the same score — 5.0 for JavaScript Manual against 5.0 for Right On Page Devtools. Both are backed by a comparable volume of ratings — 2 and 2 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

JavaScript Manual ships an update every 31 months, Right On Page Devtools every 3 months. The most recent releases landed on September 20, 2026 and September 18, 2026 respectively.

## The numbers

| Metric | JavaScript Manual | Right On Page Devtools |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (2 ratings)](https://appshunter.io/ios/app/javascript-manual/id6476828541/reviews) | [5.0 (2 ratings)](https://appshunter.io/ios/app/right-on-page-devtools/id6739692384/reviews) |
| Number of ratings | 2 | 2 |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 31 months | **Every 3 months** |
| Monetization | Free | Free |
| Size | 34 MB | 3 MB |
| Requires iOS | **15.0** | 16.4 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Hua Yang](https://appshunter.io/developer/1497666891) | [泰宁 陆](https://appshunter.io/developer/591708109) |

## 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


### Right On Page Devtools

[App page](https://appshunter.io/ios/app/right-on-page-devtools/id6739692384)

This Safari extension brings web development tools directly to your iPhone. View console logs and API requests on the webpage, and inspect or modify CSS elements without needing a computer.

**Highlights:** View console logs on page, See API requests on page, Inspect and change CSS, On-device web debugging, Safari extension

**Features:** macOS Compatibility, Safari Extension, 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 Right On Page Devtools free?

Right On Page Devtools is free to download, with no in-app purchases.

### Which has better reviews, JavaScript Manual or Right On Page Devtools?

JavaScript Manual and Right On Page Devtools are both rated 5.0 out of 5 on the App Store, from 2 and 2 ratings respectively.

### Do JavaScript Manual or Right On Page Devtools have ads?

Neither JavaScript Manual nor Right On Page Devtools shows ads.

### Which is updated more often, JavaScript Manual or Right On Page Devtools?

JavaScript Manual ships an update every 31 months, and Right On Page Devtools every 3 months. Most recently, JavaScript Manual was updated on September 20, 2026 and Right On Page Devtools on September 18, 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.*