# JavaScript大全 vs HTML Viewer

The clearest difference is price: HTML Viewer at Free against JavaScript大全's $1.99. HTML Viewer also leads on update cadence (every 8 days vs every 41 months) and chart position (#112 vs unranked). JavaScript大全's advantage is in-app purchases (none vs 4). On ads, device support and iOS requirement there is nothing between them.

HTML Viewer is free to download; JavaScript大全 costs $1.99 up front. HTML Viewer sells 4 in-app purchases, starting at $14.99 per year. JavaScript大全 asks for nothing beyond the download.

JavaScript大全 ships an update every 41 months, HTML Viewer every 8 days. The most recent releases landed on September 21, 2026 and September 16, 2026 respectively.

## The numbers

| Metric | JavaScript大全 | HTML Viewer |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| Rating | — | **[4.6 (9 ratings)](https://appshunter.io/ios/app/html-viewer-view-source/id6746666386/reviews)** |
| Number of ratings | — | **9** |
| Positive reviews | — | 25.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 41 months | **Every 8 days** |
| Monetization | Paid | **Free with in-app purchases** |
| Best chart rank | — | **#112** |
| Size | 95 MB | 84 MB |
| Requires iOS | **12.0** | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [强 马](https://appshunter.io/developer/687218962) | [Utsav Mangla](https://appshunter.io/developer/1729995457) |

## What reviewers say

### JavaScript大全

[App page](https://appshunter.io/ios/app/javascript/id1583583033)

Learn JavaScript from beginner to advanced levels with this comprehensive tutorial. It covers the essential programming language for all modern web pages, making it easy to pick up.

**Highlights:** Beginner to advanced JavaScript knowledge, Covers essential web programming, Easy to learn, Comprehensive tutorial

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

**In-app purchases:** none


### HTML Viewer

[App page](https://appshunter.io/ios/app/html-viewer-view-source/id6746666386)

**Currently charting:** #112 Top Grossing · Developer Tools (US App Store)

Inspect and analyze the HTML source code of any website or local files. Features include element inspection, syntax highlighting, and multi-tab support for efficient workflow. Ideal for developers and students learning web technologies.

**Highlights:** View website source code, Inspect elements, Open local/iCloud HTML files, Multiple tabs support, Syntax highlighting, Search and copy code

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| HTML Viewer - All access - Mid | $14.99 | per year |
| HTML Viewer - All access - Max | $19.99 | per year |
| HTML Viewer - All access - Max | $19.99 | per year |
| HTML Viewer - Lifetime | $9.99 | one-time |


## Frequently asked questions

### Is JavaScript大全 free?

JavaScript大全 costs $1.99, with no in-app purchases.

### Is HTML Viewer free?

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

### Do JavaScript大全 or HTML Viewer have ads?

Neither JavaScript大全 nor HTML Viewer shows ads.

### Which is updated more often, JavaScript大全 or HTML Viewer?

JavaScript大全 ships an update every 41 months, and HTML Viewer every 8 days. Most recently, JavaScript大全 was updated on September 21, 2026 and HTML Viewer on September 16, 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.*