CODE: JavaScript Runner, Calculator, IDE

Contains adsIn-app purchases
234 reviews
Content rating
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About this app

Run JavaScript on your Android!

★ Embedded JavaScript runner engine
★ Code editor
★ Smart Code Completion in the Premium version

CODE is a really simple, yet powerful code runner for your everyday calculations. You may use it as a calculator for really complex tasks (e.g. calculate the cash flow related to your mortgage, car loan, and student loan combined, or per month in the next 12 years, interest rates included). It will display, save and color the formula for better understanding and future viewings. Given you know JavaScript…

Yes, JavaScript is an industry standard scripting language, which is easy to learn, and one of the most widely used languages on the planet! If you are new to it, you can further your career by learning JavaScript while calculating (maybe to run your company better) or programming anything with textual output. You can practice on the go, without internet connection.

How to Start?
Using this app is a great way to learn the basics of JavaScript, but it is not entirely about teaching, more about using JavaScript to calculate easily. You will find a sample project with a few common calculations at first, and a Help section in the menu. As you learn scripting though, you can use the app more and more to help you with complex questions.

★ Embedded JavaScript engine - Run your code fast and securely!
★ Code editor - Streamlines editing with smart indenting, comment/uncomment line, syntax highlighting, brace matching, etc.
★ Smart Code Completion in the Premium version - Type less with the keyboard by using code completion, snippets and already used variable names.
★ Symbol Keyboard Extension - Additional symbol buttons to extend your keyboard with frequently used symbols during programming. Number Row also available with easy to access numbers.
★ Project-based code organization - Simple code organization in a virtual folder tree called a Project. Easy management of scripts.
★ Edit menu - Undo, Redo, Toggle Line Comment, Find & Replace in file, Minifying code compression
★ Unsaved file management - Undo, Redo, Restore to last saved
★ Font Size Setting - Change the font size to your liking.
★ Console Log - Review all your run results and errors on the Console.
★ Share Script - Share your script with other apps that support text formats
★ Script Samples - You won't start with nothing. We would like to help you start with a few sample codes in a sample project for common calculations.
★ Help - Find links to online help to boost your learning curve
★ Feedback - Our goal is to listen to you. Your feedback will be appreciated! Please use the smiley in the menu to send us any thoughts about the app!
★ Offline Use - You can use the app on the go, no need for internet connection.
★ No Harmful Permissions - The app only needs the basic permissions to serve you a code runner environment. No calls, text messages or any suspicious permissions.

Premium Features
★ Remove Advertisements - No more annoyances, just flawless coding experience
★ Code Completion - Type less with the keyboard by using code completion, snippets and already used variable names.
★ Auto-Save - Save your code as you type to prevent the loss of your work
★ Improved Run Result Display - Seamless run results in a new way so you never have to click the "Got it" button again! Just continue coding until you get the result you want!
★ Support The Developers - Help us pay our bills by donating a few dollars if you like our work by buying Premium.
Updated on
May 30, 2020

Data safety

Developers can show information here about how their app collects and uses your data. Learn more about data safety
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234 reviews
Shouin Nelson
August 3, 2020
Good work! However, I have experienced a few issues after continued use of this app. It's kind of glitchy. At first the RUN button would stay stuck in the bottom right corner of the screen making me have to close my on-screen keyboard to press it. I eventually changed keyboards and that problem went away, even after returning to the initial keyboard. Secondly, many standard keyboard shortcuts don't work. I tried Ctrl+C,V,X,Z and S, but only Ctrl+V worked.Other keyboard shortcuts such as Shift+Arrow to select character doesn't work. Strange, as I thought these were universal Android keybindings. Lastly, it would probably be much easier for users if the Undo and Save buttons were to the left of the much used RUN button at the bottom, instead of all the way at the top bar since the keybindings that make it easy to execute those actions don't work.
14 people found this review helpful
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August 3, 2020
Thank you for the detailed feedback! Those keyboard shortcuts are a good idea! The app is mainly made for mobile keyboards (without ctrl key), but supporting shortcuts can be done, and maybe some people could use them just like you. May I ask what keyboard app are you using that have the Ctrl key? Are you using a physical keyboard (Bluetooth)?
Game Stuff
September 11, 2021
Easiest and most simpile JavaScript code tester ever! I wish I could change the names of folders and files, or even delete them. EDIT: I just noticed I could do that, you just click and hold.
8 people found this review helpful
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Chad Chaddingston
August 2, 2022
Would be a nice simple js editor/runner but unable to add a enter on keyboard is replaced with next... Perhaps there's a setting I can change but happens with default and custom keyboards. Any suggestions?
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What's new

Fix issue of losing unsaved code changes when changing device orientation