JavaScript Anywhere JSAnywhere vs HTML Viewer Pro
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
JavaScript Anywhere JSAnywhere
This app provides a portable programming editor for web development on mobile devices. It allows users to write and preview JavaScript, HTML, and CSS code, with features like console logging and file sharing. It's designed for web engineers and designers needing a simple, on-the-go coding solution.
- Write JavaScript, HTML, CSS
- Internal browser preview
- Console logs and errors
- Import/export via Dropbox
- Project templates
- Wi-Fi server
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Programming editor in your pocket. JavaScript Anywhere is one of the oldest development environments on iOS since 2010. It's a simple and portable editing tool for web engineers and designers. [Features] - Write JavaScript, HTML, and CSS source code. - Preview on the internal browser. - Show console logs or errors. - Import project / Download images from the web. - Send e-mail / iTunes file sharing to export. - Configure editor styles, and syntax highlighting. - Simple server for Wi-Fi - Export to / Import from Dropbox. - Project templates (Basic/jQuery/React/Bootstrap/p5) That's all. JSAnywhere is minimal forever. Happy coding! --------------- Featured in: * The magazine "Mac People" in September 2013 issue. * "Apps for Developers" on App Store collection by Apple in June 2015.
HTML Viewer Pro
View HTML source code from URLs or directly from Safari. This app offers multi-tab browsing, bookmarking, and search functionality. Customize the display with various themes, fonts, and user agents.
- View source code from URLs
- View source code from Safari share
- Multi-tab browsing
- Bookmark and history management
- Keyword search in source code
- Switch between static and dynamic HTML
- Customizable themes and fonts
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It is a multi-functional HTML source viewer. You can view the source code by URLs, and of course, you can also view the source code from Safari's share button. Since it is the latest version of the app, it covers almost all the features of other apps. [Features & Functions] - Browser and source code switching. - Multi-tab browsing. - Display bookmarks and history. - Search for keywords in the source code. - Switch between static and dynamic HTML. - Changing the user agent. - Display non-HTML languages. - Use the cloud, such as iCloud, Dropbox, OneDrive, etc. - Use local files in the iPhone and iPad. - Balanced light operation. [View source code] - About 90 different design themes available. - Change the font, size and line spacing. - Switch between static and dynamic HTML. - Support for almost all programming languages (over 180). [Terms & Conditions] https://www.hayaya.net/terms-conditions/html-viewer.html [Privacy Policy] https://www.hayaya.net/privacy-policy/html-viewer.html
Screenshots
Verdict
The clearest difference is in-app purchases: JavaScript Anywhere JSAnywhere at none against HTML Viewer Pro's 2. JavaScript Anywhere JSAnywhere also leads on update cadence (every 2 months vs every 15 months) and ratings volume (459 vs 45). HTML Viewer Pro's advantage is rating (3.9 vs 3.5) and iOS requirement (12.0 vs 15.0). On price, review sentiment, ads 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. HTML Viewer Pro sells 2 in-app purchases, starting at $1.99 per month. JavaScript Anywhere JSAnywhere asks for nothing beyond the download.
HTML Viewer Pro holds the better App Store score, 3.9 against 3.5. That said, the two scores are not equally well evidenced: JavaScript Anywhere JSAnywhere has 459 ratings behind it against 45, so its average is the more settled of the two. Written reviews complicate that: 55% of JavaScript Anywhere JSAnywhere's written reviews are positive against 47% of HTML Viewer Pro's, so the app with the better star average is not the one people write more warmly about.
JavaScript Anywhere JSAnywhere ships an update every 2 months, HTML Viewer Pro every 15 months. The most recent releases landed on September 23, 2026 and September 5, 2026 respectively.
| Parameter | JavaScript Anywhere JSAnywhere | HTML Viewer Pro |
|---|---|---|
| Price | Free | Free |
| Rating | 3.5 (459 ratings) | 3.9 (45 ratings) — better |
| Positive reviews | 55.1% of reviews — better | 47.4% of reviews |
| Number of ratings | 459 — better | 45 |
| Update frequency | Every 2 months — better | Every 15 months |
| Ads | Yes | Yes |
| In-app purchases | No — better | Yes |
| Monetization | Ad-supported — better | Free with in-app purchases |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.0 | 12.0 — better |
| Further details — not scored | ||
| Size | 54 MB | 33 MB |
| Age rating | 4+ | 17+ |
| Developer | Tatsuya Tobioka | Hayato Shimizu |
Customer experience
JavaScript Anywhere JSAnywhere
HTML Viewer Pro
Bugs and requests
JavaScript Anywhere JSAnywhere
Reported bugs
4 issues- Crashes when creating new projects
- CSS and JavaScript changes not reflected in output
- Incompatible with newer iOS versions
- Unexpected behavior with certain JavaScript features
Requested features
9 requests- Add ability to save files
- Improve syntax highlighting
- Add line numbers
- Support for more file types (e.g. TypeScript, SCSS)
- Ability to create and manage multiple projects
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- Integrate with cloud storage (e.g. iCloud, Google Drive)
- Add a JavaScript console for debugging
- Customize keyboard with common coding characters
- Implement a full-screen mode
HTML Viewer Pro
Not enough reviews yet to summarise bugs or requests.
In-app purchases
JavaScript Anywhere JSAnywhere
No in-app purchases
HTML Viewer Pro
- Premium (Monthly plan)$1.991 Month
- Premium (Buying out)$19.99
Questions
Is JavaScript Anywhere JSAnywhere free?
Is HTML Viewer Pro free?
Which has better reviews, JavaScript Anywhere JSAnywhere or HTML Viewer Pro?
Do JavaScript Anywhere JSAnywhere or HTML Viewer Pro have ads?
Which is updated more often, JavaScript Anywhere JSAnywhere or HTML Viewer Pro?
Other comparisons
