Compile Academy Start learning
Learn · Practise · Build it yourself

Learn to code. Build your own projects.

Short lessons like in a language app – and a real compiler for your own programs: Compile Academy Studio with file tree, terminal and preview. Free, without ads, on phone, tablet and desktop.

Start learning Open compiler

Get Studio for Windows or install it as an app View 20 courses

  • 20 languages
  • 1323 lessons
  • 6300 tasks
  • €0 · no ads

Free. No ads. At home on every screen.

</>HTML{ }CSSJSJavaScriptTSTypeScriptJSXReactPyPythonSQLSQLKtKotlinSwSwiftC++C++JvJavaGoGoRsRustCCC#C#gitGit & GitHub>_Bash & TerminalFEFrontend-EntwicklungBEBackend mit Node.jsAPPApp-Entwicklung
The Duolingo principle

Three small steps to the aha moment

No guessing, no walls of text. Every new building block is explained first – on its own short page – and only then practised.

1

Discover

Short explanation pages with an example: one concept per page, e.g. first <p>, then <h1>, then <strong>.

2

Try it out

Fill in gaps, put code in order, predict output and write your own code – with hints and instant feedback.

3

Consolidate

Daily puzzles, reviewing your mistakes and Bug Hunter keep what you’ve learned fresh. Your streak shows how far you’ve come.

Your companions

A little courage. One line further.

Five little companions for your big idea. Tap one – it gives you a tip for your next exercise.

Koda, a little code fox

Koda

Explains every building block step by step.

Nova, a violet robot with cat ears

Nova

Helps you stay curious and find bugs.

Lumi, a turquoise light spirit

Lumi

Reminds you: small steps count too.

Bugsy, a green debug beetle

Bugsy

Hunts bugs with you – error messages are its favourite puzzles.

Pixi, a pink pixel cube

Pixi

Loves colours, layouts and websites that are a joy to look at.

Koda: Read the example first. Then change exactly one thing and watch the result.

20 learning paths

From your first web page to your own app

Switch between courses at any time – every course remembers your own progress.

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HTML

Your first web page, step by step

71 lessons299 tasks
 { }

CSS

Design your own world

61 lessons271 tasks
 JS

JavaScript

Bring web pages to life

61 lessons273 tasks
 TS

TypeScript

JavaScript with superpowers

63 lessons280 tasks
 JSX

React

Build modern interfaces

68 lessons305 tasks
 Py

Python

Program your own ideas

61 lessons272 tasks
 SQL

SQL

Asking data questions – and getting answers

77 lessons320 tasks
 Kt

Kotlin

The language behind modern Android apps

67 lessons280 tasks
 Sw

Swift

From your first line to your app idea

57 lessons241 tasks
 C++

C++

Understand every character of your program

65 lessons273 tasks
 JvNew

Java

Structured programs for desktop and server

57 lessons258 tasks
 GoNew

Go

Clear little programs and fast tools

49 lessons226 tasks
 RsNew

Rust

Fast programs with safe data

49 lessons226 tasks
 CNew

C

The foundations of data and system programs

57 lessons258 tasks
 C#New

C#

Programs for .NET, desktop and games

49 lessons226 tasks
 git

Git & GitHub

Save versions and develop together

61 lessons272 tasks
 >_

Bash & Terminal

Control your computer with commands

35 lessons175 tasks
 FE

Frontend development

Building websites and web apps – from layout to React

120 lessons690 tasks
 BE

Backend with Node.js

Build servers, APIs and databases – with Node.js and Express

105 lessons615 tasks
 APP

App Development

Build phone apps – with React Native, SwiftUI, Jetpack Compose and Flutter

90 lessons540 tasks
Try it live

Write your first line – right here

Change the code on the left. The preview on the right updates instantly. Even more awaits in the app: a real SQL database, Python and JavaScript.

Robot Playground · JavaScript Program the robot with Python

index.html
Preview
Everything included

More than flashcards

A real SQL database in the browser

Your queries really run – with result tables and friendly error messages that tell you what was meant: “The column nmae doesn’t exist. Did you mean name?”

XP, streaks & achievements

Daily goal, weekly chart and badges – motivation like Duolingo.

Compiler app

Compile Academy Studio: its own app with editor, terminal, projects and a Run button – for Windows, iPhone, iPad and Android.

Get the compiler app

Workshop

Build your own projects – from a portfolio to a learning-stats database.

Sync with Google or email

Start as a guest. Sign in whenever you like – then your progress is waiting on phone, tablet and PC. Every account has its own progress.

Liquid Glass design

Real liquid glass with its own WebGL shader: light, refraction and depth – on phone, iPad and desktop in the same violet design language.

Compile Academy Studio · compiler app

Your compiler.
As its own app.

Write code, run it and save it as a project – in more than 25 languages. With terminal, pip and npm, live preview, a Liquid Glass interface and a start animation like a real app. Sign in with Google or email: your projects sync automatically.

  • ▶ “Run” always starts the file you currently have open
  • Python with pip, Java, C, C++, C#, Go, Rust, Kotlin, JavaScript, SQL and more
  • Windows version with real runtimes: PyTorch, Tkinter windows, npm
Open compiler

Windows

Your device

Download the ZIP, extract it, open “CompileAcademy-Studio-Starten.bat” – Studio starts in its own app window with a desktop shortcut.

Download for Windows ZIP · Node & npm included · Python/Java optional with one click

Android

Your device
  1. Open Studio in Chrome
  2. Tap “Install” – or menu ⋮ → “Install app”
  3. Start it from the home screen
Open Studio for Android

Mac, Linux & Chromebook

Your device
  1. Chrome or Edge: the “Install” icon in the address bar
  2. Safari on the Mac: File → “Add to Dock”
Install Studio

Can’t download? Open Compile Academy Studio in the browser without installing →

Learning app

The learning app is a web app too

Once installed, Compile Academy starts with its own icon and app window. After the first full load you can use lessons and local exercises offline; sign-in, sync and the online compiler need internet. No app store, no fees.

✓ Compile Academy is installed on this device.

Offline learning is prepared on your first visit. Keep Compile Academy open for a moment.

Learn in the browser
New · Compile Academy Studio

Two creative apps. All in the browser.

Edit images and merge PDFs – free and without uploading. Your files never leave your device. Built with exactly the HTML, CSS and JavaScript you learn at Compile Academy.

01

Compile Academy Photo

Filters, cropping, rotating, text and drawing – image editing right in the browser.

Open → 03

Compile Academy PDF

Merge PDFs, sort, rotate and delete pages – and turn images into a PDF.

Open →
Behind Compile Academy

Developed by Leander Rothschuh

Compile Academy aims to make programming as accessible as learning a language on your phone: small steps, honest feedback and a design that’s fun.

More about the developer
Questions & answers

Good to know

Is Compile Academy really free?

Yes. Compile Academy is free, without ads, without tracking and without hidden subscriptions.

Which languages can I learn?

HTML, CSS, JavaScript, TypeScript, React, Python, SQL, Kotlin, Swift, C++, Java, Go, Rust, C, C#, Git & GitHub, Bash & Terminal, Frontend-Entwicklung, Backend mit Node.js and App-Entwicklung. You write and run your own programs in the Compile Academy Studio compiler app – as a download for Windows, on iPhone, iPad and Android via the home screen.

Do I need an account?

No. You can start learning right away as a guest; your progress stays on your device. With a Google or email account it syncs between your devices.

Does Compile Academy work on my phone?

Yes – Compile Academy is built for phones and runs just as well on tablet, Windows and Mac. In the “Compiler” section you install the learning app and Studio as web apps – no app store.

I’ve never programmed before. Is that okay?

That’s exactly what Compile Academy is made for. Every concept is explained before you need it. Best start with HTML – the first lesson takes three minutes.

Ready for your first line of code?

Three minutes. One new building block. Let’s go.

Start free with Compile Academy