# HTML5 Viewer Pro vs Algorithms

The clearest difference is rating: Algorithms at 4.5 against HTML5 Viewer Pro's 4.0. Algorithms also leads on ads (none vs shown) and chart position (#188 vs unranked). HTML5 Viewer Pro's advantage is in-app purchases (none vs 3) and iOS requirement (12.0 vs 15.6). On price, review sentiment and device support there is nothing between them.

Both are free to download. Algorithms sells 3 one-off in-app purchases. HTML5 Viewer Pro asks for nothing beyond the download.

Algorithms holds the better App Store score, 4.5 against 4.0. Both are backed by a comparable volume of ratings — 2 and 8 respectively. Written reviews point the same way: 75% of HTML5 Viewer Pro's written reviews are positive against 79% of Algorithms's.

HTML5 Viewer Pro ships an update every 6 weeks, Algorithms every 3 weeks. Both last shipped on September 18, 2026.

## The numbers

| Metric | HTML5 Viewer Pro | Algorithms |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.0 (2 ratings)](https://appshunter.io/ios/app/html5-viewer-pro-editor-code/id1613694333/reviews) | **[4.5 (8 ratings)](https://appshunter.io/ios/app/algorithms-animation-display/id1624248084/reviews)** |
| Number of ratings | 2 | **8** |
| Positive reviews | 75.0% of reviews | **78.6% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 6 weeks | **Every 3 weeks** |
| Monetization | Ad-supported | **Free** |
| Best chart rank | — | **#188** |
| Size | 21 MB | 25 MB |
| Requires iOS | **12.0** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [DREAMER NETWORK CO., LTD](https://appshunter.io/developer/1613694335) | [森 林](https://appshunter.io/developer/501130350) |

## What reviewers say

### HTML5 Viewer Pro

[App page](https://appshunter.io/ios/app/html5-viewer-pro-editor-code/id1613694333)

This app is a mobile text editor designed for web development. It offers features like syntax highlighting, auto-completion, and code execution to help developers write and test HTML, CSS, and JavaScript on their devices.

**Highlights:** Syntax highlighting, Auto indention, Code assist, Auto completion, Compilation and execution, Local HTML editing

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

**In-app purchases:** none


### Algorithms

[App page](https://appshunter.io/ios/app/algorithms-animation-display/id1624248084)

**Currently charting:** #188 Top Grossing · Developer Tools (US App Store)

Learn algorithm concepts through interactive animations and code explanations. Master complex problems with a step-by-step visual approach, ideal for interview preparation and efficient learning.

**Highlights:** Interactive algorithm animations, Code explanations with subtitles, Step-by-step learning process, Categorized algorithm problems, Visual debugging aid, Focus on understanding ideas and code

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock easy problems | $2.99 | one-time |
| Unlock medium & hard problems | $3.99 | one-time |
| Unlock all problems | $5.99 | one-time |


## Frequently asked questions

### Is HTML5 Viewer Pro free?

HTML5 Viewer Pro is free to download, with no in-app purchases.

### Is Algorithms free?

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

### Which has better reviews, HTML5 Viewer Pro or Algorithms?

Algorithms is rated higher. HTML5 Viewer Pro averages 4.0 out of 5 from 2 ratings, while Algorithms averages 4.5 from 8 ratings.

### Do HTML5 Viewer Pro or Algorithms have ads?

HTML5 Viewer Pro shows ads; Algorithms does not.

### Which is updated more often, HTML5 Viewer Pro or Algorithms?

HTML5 Viewer Pro ships an update every 6 weeks, and Algorithms every 3 weeks. Most recently, HTML5 Viewer Pro was updated on September 18, 2026 and Algorithms 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.*