Comparison

HTML Dual Viewer vs JavaScript Studio

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

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.

Highlights
  • Dual screen HTML viewer
  • Syntax highlighter
  • Google search integration
  • Real-time HTML source updates
  • Adjustable screen width
  • Full screen mode
Features
Read full description

*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 !!

About

JavaScript Studio

Build web applications directly on your smartphone using JavaScript, CSS, and HTML. This tool offers error checking as you code, ensuring you don't lose your ideas. It's designed for developers who need to write code on the go.

Highlights
  • Create web apps with JavaScript, CSS, HTML
  • Error checking during coding
  • Code on your smartphone
  • Save code and ideas
  • Supports HTML5
Features
Read full description

Use your JavaScript, CSS, html skills to create apps wherever you go. These days many of us we use a smartphone anytime, as a developers sometimes we write code using some text editor to save it, for this reason I developed JavaScript Studio app a smart app that works on your phone, With JavaScript Studio you can create web apps by writing JavaScript code, CSS, Html, Html5. Error Checking? Yes, JavaScript Studio will help on it while coding by inserting a simple comment text. Never Miss any code and idea again Use JavaScript Studio. ARROWAT™ JavaScript Studio.

Screenshots

HTML Dual Viewer3 screens
JavaScript Studio4 screens

Verdict

The call

The clearest difference is review sentiment: JavaScript Studio at 100% against HTML Dual Viewer's 0%. JavaScript Studio also leads on rating (4.9 vs 2.7). HTML Dual Viewer's advantage is update cadence (every 3 weeks vs every 10 months) and iOS requirement (8.4 vs 10.0). On price, ratings volume, ads and in-app purchases 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

CostPrice · In-app purchases · Ads · Monetization

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

ReceptionRating · Positive reviews · Number of ratings

JavaScript Studio holds the better App Store score, 4.9 against 2.7. Both are backed by a comparable volume of ratings — 3 and 8 respectively. Written reviews point the same way: 0% of HTML Dual Viewer's written reviews are positive against 100% of JavaScript Studio's.

UpkeepUpdate frequency

HTML Dual Viewer ships an update every 3 weeks, JavaScript Studio every 10 months. The most recent releases landed on August 15, 2026 and June 1, 2026 respectively.

Scorecard4 real differences · 6 level
HTML Dual Viewer versus JavaScript Studio: the parameters behind the verdict, then further details
ParameterHTML Dual ViewerJavaScript Studio
PriceFreeFree
Rating2.7 (3 ratings)4.9 (8 ratings) — better
Positive reviews0.0% of reviews100.0% of reviews — better
Number of ratings38 — better
Update frequencyEvery 3 weeks — betterEvery 10 months
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPodiPhone, iPad, iPod — better
Requires iOS8.4 — better10.0
Further details — not scored
Size16 MB33 MB
Age rating17+4+
DeveloperMakoto NishimotoArrowat LLC

Customer experience

HTML Dual Viewer

All ratings3 ratings
Positive33.3%
Neutral0.0%
Negative66.7%
Written reviews2 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

JavaScript Studio

All ratings8 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews4 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

HTML Dual Viewer

No in-app purchases

None

JavaScript Studio

No in-app purchases

Questions

Is HTML Dual Viewer free?
HTML Dual Viewer is free to download, with no in-app purchases.
Is JavaScript Studio free?
JavaScript Studio is free to download, with no in-app purchases.
Which has better reviews, HTML Dual Viewer or JavaScript Studio?
JavaScript Studio is rated higher. HTML Dual Viewer averages 2.7 out of 5 from 3 ratings, while JavaScript Studio averages 4.9 from 8 ratings.
Do HTML Dual Viewer or JavaScript Studio have ads?
Neither HTML Dual Viewer nor JavaScript Studio shows ads.
Which is updated more often, HTML Dual Viewer or JavaScript Studio?
HTML Dual Viewer ships an update every 3 weeks, and JavaScript Studio every 10 months. Most recently, HTML Dual Viewer was updated on August 15, 2026 and JavaScript Studio on June 1, 2026.

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