Coding academy · developer environment
Learn to build softwarethat actually works.
Lessons in plain English, challenges graded against real hidden tests, and projects with a client brief. Nothing unlocks until you can actually do it.
- no credit card
- code runs sandboxed
- free tier forever
function total(prices) {
let sum = 0;
for (const price of prices) {
sum += price;
}
return sum;
}▌2 / 2 tests passing · +40 XP · skill "loops" 62 → 74
Tutor: you swapped the running total to a number — that's why += adds now instead of joining text.
The route through
- 01
Learn
plain-English lessons
- 02
Practice
guided repetitions
- 03
Solve
graded challenges
- 04
Build
real project briefs
- 05
Ship
reviewed & deployed
- 06
Career ready
verified skill record
Progression is enforced
You can't click your way to competence.
Each lesson opens only when the one before it is genuinely passed — quick check, then code. Every decision is made on the server, so there is nothing to skip past.
Technology map
Skills recorded as evidence, not badges.
Every passing test moves a skill's confidence. Your profile shows what you have actually demonstrated, across the whole map.
Foundations
- Logic
- Variables
- Loops
- Functions
- Debugging
Languages
- JavaScript
- TypeScript
- Python
- SQL
Web
- HTML
- CSS
- React
- APIs
- Auth
Data
- Postgres
- Schemas
- Queries
- Analytics
AI
- Prompting
- Embeddings
- Agents
- Evaluation
Ship
- Git
- Testing
- Cloud
- CI
- Observability
Project workspace
Ten levels of real briefs, from first app to shipped product.
Describe what you want to build. Get a roadmap you can learn from.
Type an idea — an AI study assistant, a booking platform, a game — and the studio turns it into a plan, a stack, the skills you're missing, and the order to build it in.
open the studio- 01
Idea
- 02
Plan
- 03
Tech stack
- 04
Skills to learn
- 05
Roadmap
- 06
Build
- 07
Test
- 08
Ship
Kids Academy · ages 5-16
Got young coders at home? They get their own academy.
Private child profiles with no email address, a kid-safe helper robot you can switch off, and a guardian dashboard that shows everything they finish.
Start with the first lesson.
Free forever tier, 20 tutor messages a day, and every core course open from the start.