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JavaScript Anywhere JSAnywhere

JavaScript Anywhere JSAnywhere

JS, HTML and CSS for everyone.

465 ratings
458 reviews
With Ads
🔧 Utilities
📊 Productivity
Free
With Ads

Details

Released
March 26, 2010
Updated
October 26, 2026

Developer

Tatsuya Tobioka
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JavaScript Anywhere JSAnywhere screenshot #1 for iPhone
JavaScript Anywhere JSAnywhere screenshot #2 for iPhone
JavaScript Anywhere JSAnywhere screenshot #3 for iPhone
JavaScript Anywhere JSAnywhere screenshot #4 for iPhone
JavaScript Anywhere JSAnywhere screenshot #5 for iPhone
iphone
ipad
📌Ready
Reviews summary↘︎
⭐458
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📝22+ tags
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🔄6+ apps
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❓5 answered
FAQ↘︎
📦~ in 2 months
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About

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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What users say about JavaScript Anywhere JSAnywhere

Reviews of JavaScript Anywhere JSAnywhere are mostly positive: the Utilities app is rated 3.5/5 from 465 App Store ratings. What users like most: constant use, amazing app. Top complaints: crashes, bugs. Summarized from real user reviews.

Positive things

  • 🚀Constant use
  • 🚀Amazing app
  • 🚀Great for learning
  • 🚀Perfect for coding on the go
  • 👍Simple but effective
  • 👍Great for practicing code
  • 👍Helpful for students
  • 👍Wonderful code editor

Negative things

  • 🐛Crashes
  • 🐛Bugs
  • 🐛Doesn't work
  • 🐛Issues with CSS and JavaScript
  • 🐛Compatibility problems
  • 🐛Ads distract from coding
  • 🔒Security concerns
  • 🔋High battery consumption
See all reviews

What's New in JavaScript Anywhere JSAnywhere

4.9.3

October 26, 2026

Bug fixes and stability improvements.

User reviews

Most RecentHighest RatedLowest Rated

Great App 👍

Probably one of my favorite apps I have on my phone. It was the thing that introduced me to web development and programming because I was able to use it and learn on the go. Absolutely amazing because it just works and isn’t filled with nonsense. Been using it for probably 6 years and I think it’s amazing
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HHOWDOYOUTURNCAPSLOCKOFF

JavaScript

<about:blank>
MMyahr2088

Stupid new update

Now like the code part is blocked by the side bar so you can’t see 90% of your code
GGman5416

Wow! Responsive Dev!

Had an issue with the app and the dev had an update that fixed the issue in ONE DAY! Well done dev!
NNephster

Great app!

Very informative, a go to for Java script !!
R0robbie 086
See 453 more reviews

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User experience

🐞

Reported Bugs

4 issues

Crashes when creating new projects

Bug

CSS and JavaScript changes not reflected in output

Bug

Incompatible with newer iOS versions

Bug

Unexpected behavior with certain JavaScript features

Bug
✨

Requested Features

9 requests

Add ability to save files

Feature

Improve syntax highlighting

Feature

Add line numbers

Feature

Support for more file types (e.g. TypeScript, SCSS)

Feature

Ability to create and manage multiple projects

Feature

Integrate with cloud storage (e.g. iCloud, Google Drive)

Feature

Add a JavaScript console for debugging

Feature

Customize keyboard with common coding characters

Feature

Implement a full-screen mode

Feature

FAQ

What can I do with JavaScript Anywhere?

JavaScript Anywhere allows you to write and edit JavaScript, HTML, and CSS source code directly on your mobile device. You can preview your web pages in an internal browser, view console logs and errors, and manage your projects through various import and export options.

What are the key features of this app?

Key features include the ability to write and preview code, view console logs, import/export projects via Dropbox, utilize project templates for popular frameworks like React and Bootstrap, and configure editor styles with syntax highlighting. It also offers a simple server for Wi-Fi sharing.

Is JavaScript Anywhere free to use?

The application is free to use and is supported by advertisements. While the core functionality is available without charge, users should be aware of the presence of ads within the app.

What devices is JavaScript Anywhere compatible with?

This application is designed for iOS devices, as indicated by its history as one of the oldest development environments on iOS since 2010. Specific iOS version compatibility would typically be detailed in the app store listing.

Who is the target audience for this app?

This app is intended for web engineers and designers who require a simple and portable editing tool for web development tasks on the go. It's ideal for those who need to quickly write, test, and manage code snippets or small projects.