Learn to code

Interactive lessons with live code editors, quizzes, and rewards. Write code, see results instantly, and build real skills.

Choose a language

The structure of every web page. Learn tags, elements, forms, and semantic markup.

The visual style of the web. Layouts, colors, typography, flexbox, grid, and responsive design.

JavaScript with types. Variables, functions, interfaces, classes, and async patterns.

Readable, versatile, and powerful. Data types, control flow, functions, and data structures.

Apple's language for iOS. The same language Archon uses to build apps. Optionals, structs, SwiftUI, and more.

Enterprise-grade and Android's language. OOP, collections, streams, lambdas, and the JVM ecosystem.

How it works

Interactive code editors

Every lesson includes a live code editor with a real-time output preview. Edit the code on the left, see the result on the right instantly. No setup required.

Quizzes & rewards

Test your understanding with multiple-choice quizzes. Earn XP for correct answers, build streaks for bonus points, and unlock achievement badges as you progress.

Progress tracking

Your completed lessons, XP, and achievements are saved locally. Pick up exactly where you left off and watch your skills grow.