Learn to code,
one concept
at a time.
Codeliber turns HTML, CSS, JavaScript and Python into bite-size, interactive lessons you can finish on the bus. Pick the all-in-one app, or a focused single-language track.
building.
Five ways to learn.
Go all-in with Codeliber, or download a single focused track. Your progress syncs across every app.
Codeliber
All four languages, one streak. The complete path from your first HTML tag to your first working app — with a built-in code editor, runnable examples and offline lessons.
Learn HTML
Structure your first web page — tags, headings, links and lists.
Learn CSS
Style anything — color, layout, flexbox and responsive design.
Learn JavaScript
Make pages interactive — variables, functions and the DOM.
Learn Python
Start with real programming — logic, loops and your first scripts.
Built for momentum, not marathons.
Learn by doing
Every lesson ships with runnable examples and a real editor. Write code, hit Run, see it work — right on your phone.
Bite-size lessons
Six-minute lessons grouped into clear modules. Keep a streak going in the gaps of your day, not in a 3-hour block.
Works offline
Download a track and learn on the subway, on a flight, anywhere. Your progress syncs the moment you reconnect.
Start building today.
Free to start, on iOS and Android. Your first lesson takes six minutes.