For product managers
Ship features, not tickets.
You write the specs, prioritize the backlog, and ship the roadmap. But you've always wanted to build features yourself. Dart and Flutter give you the skills to prototype, build, and ship real apps.
Think in systems, code in Dart
You already break problems into user stories and workflows. Dart's structured syntax maps to the same kind of logical decomposition. The transition is more natural than you'd expect.
Prototype your own ideas
Flutter builds apps for iOS, Android, and web from one codebase. Test product ideas with working prototypes instead of Figma mockups and slide decks.
Speak engineering's language
SOLID and DRY courses give you the vocabulary to have better technical conversations. Understand trade-offs, scope complexity, and review architecture decisions.
Dart + Flutter + design principles
From product specs to production code.
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 what you've been spec'ing
Interactive courses for product-minded builders.