Comparison

Rubyist vs JavaScript Coding

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

Head to head
About

Rubyist

Execute and automate Ruby scripts directly on your iPhone and iPad. This app utilizes the MRuby VM to run code, integrate with Shortcuts and Siri, and offers a robust editor with syntax highlighting and autocomplete.

Highlights
  • Run Ruby code on device
  • Editor with syntax highlighting
  • Code autocomplete
  • Shortcuts app integration
  • Siri command creation
  • Native alerts and inputs
  • HTTP requests
  • Clipboard access
Read full description

Rubyist allows you to run Ruby code on your iPhone and iPad using the MRuby VM. Run code directly in the app or via the Shortcuts app or Siri commands. Features: - Run Ruby code directly on your device - Built-in documentation viewer - Editor with ruby syntax highlighting - Code Autocomplete - Run Ruby directly in Shortcuts - Build your own Siri commands in Ruby. - Display native alerts and inputs using exclusive APIs - Make http requests from your code. - Write and read your clipboard from code

About

JavaScript Coding

Features
Read full description

JavaScript Coding — Learn, Practice & Run JavaScript A complete JavaScript learning environment right on your device. Write and run code instantly with a professional editor, interactive console, step-by-step tutorials, hands-on coding challenges, and built-in Chart.js for data visualization. Code Editor & Console • Full-featured editor with syntax highlighting and autocomplete • Interactive JS Console (REPL) for instant experimentation • Run code directly on your device — no server needed • Customizable themes, font size, and editor settings 60+ Step-by-Step Tutorials • JavaScript Basics — variables, loops, functions, arrays, objects • DOM & Browser — selectors, events, forms, fetch API • Async & Promises — callbacks, async/await, error handling • ES6+ Features — destructuring, generators, proxies, symbols • Algorithms — sorting, searching, stacks, linked lists, hash tables • Chart.js — bar charts, line charts, pie/doughnut, styling, dynamic updates 30+ Coding Challenges • Practice with real coding exercises at Easy, Medium, and Hard levels • Categories: JavaScript, Arrays & Objects, Strings, Functions, Algorithms • Automated test verification — get instant feedback on your solutions Chart & Visual Output • Built-in Chart.js — create bar, line, pie, and doughnut charts instantly • Render Canvas graphics and DOM elements directly in the output panel • No setup needed — Chart.js is bundled and always available Library Manager • 25+ popular JavaScript libraries: lodash, axios, D3, p5.js, mathjs, and more • Chart.js built-in — no download required • Libraries are downloaded for offline use • Use them directly in your code with global variables File Manager & Examples • Create, organize, and manage your JavaScript files • Import files from your device • Ready-to-run code examples to get started quickly Built for Learning • Progress tracking across tutorials and challenges • Dark mode support throughout the app • Works offline — write and run code anywhere • Keep screen awake while coding Whether you're a beginner learning JavaScript for the first time, visualizing data with Chart.js, or an experienced developer practicing algorithms — JavaScript Coding gives you everything you need to code on the go. Payment will be charged to iTunes Account at confirmation of purchase. Subscription automatically renews unless auto-renew is turned off at least 24-hours before the end of the current period. Account will be charged for renewal within 24-hours prior to the end of the current period, and identify the cost of the renewal. Subscriptions may be managed by the user and auto-renewal may be turned off by going to the user's Account Settings after purchase. Any unused portion of a free trial period, if offered, will be forfeited when the user purchases a subscription to that publication, where applicable. Terms of use https://septudio.com/terms-of-use and privacy policy https://septudio.com/privacy-policy

Screenshots

Rubyist4 screens
JavaScript Coding4 screens

Verdict

The call

The clearest difference is chart position: JavaScript Coding at #104 against Rubyist's unranked. JavaScript Coding also leads on iOS requirement (15.1 vs 17.0). On price, ads, in-app purchases 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Rubyist sells 3 one-off in-app purchases and JavaScript Coding sells 2 in-app purchases, starting at $2.99 per year. Whichever you choose, the download price is not the number that matters.

Scorecard2 real differences · 9 level
Rubyist versus JavaScript Coding: the parameters behind the verdict, then further details
ParameterRubyistJavaScript Coding
PriceFreeFree
Rating4.6 (93 ratings) — better—
Positive reviews83.3% of reviews—
Number of ratings93 — better—
Update frequencyEvery 3 weeks—
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchases—
Best chart rank—#104 — better
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS17.015.1 — better
Further details — not scored
Size26 MB32 MB
Age rating4+4+
DeveloperTSUBASA TECHNOLOGIES LIMITED LIABILITY COMPANY婉媚 邵

In-app purchases

3 purchases

Rubyist

One-time3
  • Small Tip$0.99
  • Medium Tip$4.99
  • Large Tip$9.99
2 purchases

JavaScript Coding

Subscriptions1
  • JavaScript Coding Pro7 Days trial$2.991 Year
One-time1
  • JavaScript Coding Pro$9.99

Questions

Is Rubyist free?
Rubyist is free to download, with in-app purchases available.
Is JavaScript Coding free?
JavaScript Coding is free to download, with in-app purchases available.
Do Rubyist or JavaScript Coding have ads?
Neither Rubyist nor JavaScript Coding shows ads.

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