Comparison

CodeRun vs Simple JavaScript

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

Head to head
About

CodeRun

Run and edit code for hundreds of programming languages directly on your mobile device. Features instant execution, interactive debugging, and code sharing capabilities for developers, students, and enthusiasts.

Highlights
  • Supports 680 programming languages
  • Instant code execution
  • Interactive debugging
  • Code sharing and importing
  • Mobile code prototyping
  • Learning-friendly environment
Features
Read full description

CodeRun is a powerful mobile code arena that allows you to run and edit code in various programming languages on your mobile device. It supports 680 languages, ranging from popular ones like Python, Java, Swift, C#, JavaScript, and C++ to more obscure ones like Brainfuck, INTERCAL, and Malbolge. It's perfect for developers, students, and anyone who wants to explore programming on a mobile device. Features: Wide language support: CodeRun supports 680 programming languages, covering a vast range of programming language options. Instant execution: Simply write your code and click the run button to see the output immediately. Interactive debugging: The integrated debugger allows you to step through your code and inspect variable values. Code sharing: Easily share your code snippets or import code from other users. Advantages: Convenience: Quickly try out code on a mobile device without setting up a local development environment. Learning-friendly: The interactive environment is great for learning new programming languages or concepts. Collaboration-friendly: Easily share code snippets with others to foster collaboration and knowledge sharing. Versatility: Supporting multiple languages makes it an ideal tool for various programming tasks. Scalability: Continuously adding new languages and features ensures compatibility with the latest developments in programming languages and technologies. Use Cases: CodeRun is suitable for a wide range of use cases, including: Learning programming: Explore different programming languages in an interactive environment without setting up complex development environments. Code prototyping: Quickly test algorithms or concepts before writing full programs. Code debugging: Isolate and solve code issues without setting up a complete development environment. Code golfing: Attempt to write code that is as concise and efficient as possible. Code sharing: Share code snippets with others for collaboration, showcasing, or knowledge sharing. Unlimited Access Subscription: - With this subscription, you can enjoy unlimited access to all features within the app. - Subscriptions are charged weekly, monthly, or yearly, depending on the selected subscription plan. - Payment will be charged to your iTunes account upon confirmation of purchase. - You can turn off auto-renewal at least 24 hours before the current subscription period ends; otherwise, the subscription will automatically renew. - The renewal fee will be charged to your account within 24 hours before the end of the current subscription period, depending on the chosen plan. - Users can manage their subscriptions and can turn off auto-renewal in their account settings after purchase. - Any unused portion of a free subscription trial period will be forfeited upon purchase. Privacy Policy: https://www.dazhuogroup.com/coderun/privacy_statement_en.php Terms of Use: https://www.dazhuogroup.com/coderun/terms_of_use_en.php

About

Simple JavaScript

Features
Read full description

β€œWant to try code while you’re on the go?” This app is a simple JavaScript editor and runtime designed for smartphones. It provides a powerful code editor with syntax highlighting, allowing you to write and run JavaScript code instantly. It is suitable for everything from learning JavaScript to practical coding and testing. Common use cases include: * Learning JavaScript * Programming practice * Learning web development * Studying algorithms * Testing code snippets * Verifying sample code * Taking JavaScript notes * Creating scripts * Testing functions * Writing code for technical blogs * Training and workshops * Building prototypes * Managing code snippets * Experimenting with new ideas * Creating a simple testing environment during development JavaScript can be used in many different ways, and this app helps you quickly write, test, and manage your code. If you are looking for a JavaScript editor and runtime, give it a try. β–  Features β€’ Intuitive Interface Simple tools should be easy to use. The editor is designed to be fast, responsive, and comfortable for everyday coding. β€’ Run Code Instantly Execute JavaScript code with a single tap. View output and error messages immediately. β€’ Code Auto Completion Built-in code completion helps you write code more efficiently. β€’ Code Formatting Automatically format your code to improve readability and maintain a clean coding style. β€’ Find and Replace Search and replace text within your code quickly and easily. β€’ Code Folding Collapse and expand code blocks to make large files easier to navigate. β€’ Easy Cursor Navigation Move the cursor using directional controls for more precise editing. β€’ Automatic Saving Your code is automatically saved while editing, so you never have to worry about losing changes. β€’ Ready to Use No account registration is required. Start coding immediately after installation. β€’ Export and Share Export and share your code with others. Useful for backups and editing on different devices. β€’ Dark Theme Support Supports dark mode for comfortable coding day and night.

Screenshots

CodeRun4 screens
Simple JavaScript4 screens

Verdict

The call

The clearest difference is chart position: Simple JavaScript at #199 against CodeRun's unranked. CodeRun's advantage is iOS requirement (12.0 vs 15.6). On price, update cadence, ads and in-app purchases there is nothing between them.

Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS

CostPrice Β· In-app purchases Β· Ads Β· Monetization

Both are free to download. CodeRun sells 3 in-app purchases, starting at $0.99 per 7 days and Simple JavaScript sells 2 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

CodeRun ships an update every 5 weeks, Simple JavaScript monthly. The most recent releases landed on September 22, 2026 and September 21, 2026 respectively.

Scorecard2 real differences Β· 7 level
CodeRun versus Simple JavaScript: the parameters behind the verdict, then further details
ParameterCodeRunSimple JavaScript
PriceFreeFree
Positive reviews0.0% of reviewsβ€”
Update frequencyEvery 5 weeksMonthly β€” better
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchasesβ€”
Best chart rankβ€”#199 β€” better
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS12.0 β€” better15.6
Further details β€” not scored
Size40 MB54 MB
Age rating4+4+
DeveloperShanghai Dazhuo Information Technology Co., Ltd.YUKI TANAIKE

In-app purchases

3 purchases

CodeRun

Subscriptions3
  • Weekly Subscription3 Days trial$0.997 Days
  • 3-day free trail3 Days trial$2.991 Month
  • Annual Subscription$12.991 Year
2 purchases

Simple JavaScript

Subscriptions2
  • Simple JavaScript Pro (Monthly)$1.991 Month
  • Simple JavaScript Pro (Annual)$18.001 Year

Questions

Is CodeRun free?
CodeRun is free to download, with in-app purchases available.
Is Simple JavaScript free?
Simple JavaScript is free to download, with in-app purchases available.
Do CodeRun or Simple JavaScript have ads?
Neither CodeRun nor Simple JavaScript shows ads.
Which is updated more often, CodeRun or Simple JavaScript?
CodeRun ships an update every 5 weeks, and Simple JavaScript monthly. Most recently, CodeRun was updated on September 22, 2026 and Simple JavaScript on September 21, 2026.

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