For Python developers building apps
Write apps, not just scripts.
You write great backends and scripts. Now build the frontend. Dart's syntax feels familiar, and Flutter gives you iOS, Android, and web from one codebase.
Dart reads like Python
Clean syntax, strong typing, async/await. If you use Python type hints, Dart feels natural from the first lesson.
From backend to full-stack
Flutter teaches UI composition, state management, and navigation. The pieces your Flask or FastAPI app is missing.
Exercises, not lectures
Every lesson is a problem to solve. Write code, run tests, see results. The same feedback loop you know from writing Python.
Dart + Flutter + SOLID + DRY
From Python scripts to production apps.
Write code from lesson one
Every lesson is an exercise you solve in your browser. Real code, real tests, real feedback.
Structured progression
Each concept builds on the last. You always know what to learn next.
Multiple exercise types
Quizzes, fill-in-the-blank, matching, and code keep every lesson engaging.
Instant feedback
Submit your answer and see test results in milliseconds.
Learn by doing
Solve exercises in your browser from the first lesson.
Join over 5,000 learners
Explore our courses
Pick a course and solve your first exercise.
Dart Course
An interactive Dart course where you code, test, and build apps directly in your browser.
Flutter Course
An interactive Flutter course where you code, test, and build apps directly in your browser.
S.O.L.I.D. Course
Learn the principles of how software should be structured, so you can guide AI to build better systems.
D.R.Y. Course
Learn to identify and eliminate code duplication, making your codebase cleaner and easier to maintain.
System Design Course
Learn how APIs, databases, caching, and load balancing fit together to build scalable systems.
Interactive courses
Every lesson is an exercise with instant feedback.
Build complete applications.
Interactive courses for Python developers learning app development.