HTML Dual Viewer vs WebPen
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
HTML Dual Viewer
View HTML source code and browse web pages side-by-side. Features a syntax highlighter and Google search integration for easy code checking and site analysis. Allows real-time updates of HTML source as you navigate.
- Dual screen HTML viewer
- Syntax highlighter
- Google search integration
- Real-time HTML source updates
- Adjustable screen width
- Full screen mode
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*Dual View & Google Search & Syntax Highlighter HTML Viewer!! *High quality but simple. Corresponding to search Google, it is a two-screen HTML Viewer. NEW!! Syntax Highlighter like "Sublime text" *Syntax Highlighter is heavy process. If loading time is too long, you had better changing background color to "Blue". (No Syntax Highlighter mode) [How to use] Browser screen left, the right to display the HTML source at the same time . Make it easy to adjust the width of each screen. You can check the HTML source to compare left and right. Because it corresponds also "Google search", you do not need to directly hit the URL. HTML source is also updated in real time when you open a new page. I also support shared from the browser. *Full Screen Mode: Double-tap on source view [Features] Unlike the HTML Viewer to display the hit URL, you can use "Google Search". Because every time you open a new web page, HTML source will be updated automatically, it is also useful to check the entire site. Simple, easy to use and safe operation as well, it is a handy HTML Viewer !! This app is best HTML Viewer !!
WebPen
Write, test, and run HTML, CSS, and JavaScript code directly on your mobile device. This app offers a clean editor with live preview and the ability to instantly execute AI-generated code. Save your projects and share them easily.
- Code Editor for HTML/CSS/JS
- Instant AI Code Execution
- Live Code Preview
- Save and Store Projects
- Customizable User Interface
- Quick Code Sharing
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Want to write or test HTML, CSS, and JavaScript right on your phone? This app makes it simple: edit your code and see the result instantly. Even better—you can paste in AI-generated code and run it with just one tap! Key Features: Code Editor: Clean, easy-to-use editor for HTML/CSS/JS. AI Code Ready: Instantly run code generated by AI tools. Live Preview: Write and see the result immediately. Save Your Work: Store projects and pick up anytime. Customizable UI: Change fonts and themes to fit your style. Quick Sharing: Copy or share your code with ease. Perfect for learning, coding practice, or testing AI-generated web code on the go!
Screenshots
Verdict
The clearest difference is review sentiment: WebPen at 60% against HTML Dual Viewer's 0%. WebPen also leads on rating (3.7 vs 2.7). HTML Dual Viewer's advantage is in-app purchases (none vs 1) and ads (none vs shown). On price, ratings volume and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. WebPen sells 1 one-off in-app purchase. HTML Dual Viewer asks for nothing beyond the download.
WebPen holds the better App Store score, 3.7 against 2.7. Both are backed by a comparable volume of ratings — 3 and 7 respectively. Written reviews point the same way: 0% of HTML Dual Viewer's written reviews are positive against 60% of WebPen's.
HTML Dual Viewer ships an update every 3 weeks, WebPen every 8 months. The most recent releases landed on August 15, 2026 and June 1, 2026 respectively.
| Parameter | HTML Dual Viewer | WebPen |
|---|---|---|
| Price | Free | Free |
| Rating | 2.7 (3 ratings) | 3.7 (7 ratings) — better |
| Positive reviews | 0.0% of reviews | 60.0% of reviews — better |
| Number of ratings | 3 | 7 — better |
| Update frequency | Every 3 weeks — better | Every 8 months |
| Ads | No — better | Yes |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Ad-supported |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 8.4 — better | 15.6 |
| Further details — not scored | ||
| Size | 16 MB | 24 MB |
| Age rating | 17+ | 4+ |
| Developer | Makoto Nishimoto | 伟强 周 |
Customer experience
HTML Dual Viewer
WebPen
In-app purchases
HTML Dual Viewer
No in-app purchases
WebPen
- Remove Ads$1.99









