For self-taught developers
Fill the gaps. Build with confidence.
You've watched the tutorials. You've built the side projects. But the gaps are showing. You know enough to build, but not enough to build well. Structured courses fill exactly those gaps.
Get StartedA clear path through the chaos
Self-teaching means scattered knowledge. These courses build concepts in order, each lesson on the last. No more wondering what to learn next.
Prove you actually know it
Watching a tutorial feels like learning. Passing a test proves it. Every exercise runs real code against real tests. You know exactly where your understanding is solid.
The principles tutorials skip
SOLID, DRY, and architecture patterns are what separate tutorial followers from production developers. These are the concepts that make codebases maintainable.
Dart + Flutter + SOLID + DRY
From self-taught to production-ready, with no gaps.
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
An interactive Dart course where you code, test, and build apps directly in your browser.
Flutter
An interactive Flutter course where you code, test, and build apps directly in your browser.
S.O.L.I.D Principles in OOP
Learn the principles of how software should be structured, so you can guide AI to build better systems.
D.R.Y. (Don't Repeat Yourself)
Learn to identify and eliminate code duplication, making your codebase cleaner and easier to maintain.
TypeScript
Learn TypeScript from variables to generics, with coding challenges you solve directly in your browser.
System Design
Learn how APIs, databases, caching, and load balancing fit together to build scalable systems.
Microcontrollers
From GPIO pins and breadboard circuits to sensors, displays, motors, and communication protocols like I2C, SPI, and UART.
Electricity and Current
Learn how electricity works, from voltage, current, and resistance to circuits, Ohm's law, and common components like resistors, LEDs, and capacitors.
Interactive courses
Every lesson is an exercise with instant feedback.
Structure for the self-taught
Interactive courses that fill exactly the gaps tutorials leave behind.
Get Started