Three missions. Right on this page.
- Watch a lesson runscroll the lessonNot done yet
- Find your coursepick a pathNot done yet
- Pass the quick checkanswer the checkNot done yet
0/3
EARLY ACCESSJoin the waitlist
Level upyour code.
T3lem teaches programming like a game: short missions, real code that runs, and a PASS when you get it right.
iPhone beta now · Android coming soon
You are on step 0 of 3 · finish missions to climb
T3lem is a coding course that plays like a game. Every lesson is a mission. You write real code, watch it run in a real browser, and the app checks your result before you earn your PASS.
Chapters
Paths are built from short chapters, stacked so each one starts where the last one ended.
Missions
Every lesson is one clear mission. Change the code, see the result, move to the next block.
Progress
Each step shows where you are, like 7:8, so you always know how close the PASS is.
Start in
three steps.
Pick what you want to build, finish short missions, and collect your PASS. No experience needed for the web path.
Everything runs in 3 steps
- 1
Pick a path
HTML & CSS, JavaScript, Vibe Coding or Machine Learning.
- 2
Finish missions
One clear mission per lesson. Change the code and watch the page update.
- 3
Earn your PASS
The app checks your result. Get it right and the next lesson opens.
- iPhone beta
- Real code in English
- Try a mini-lesson without an account
Stop watching.
Start building.
Tutorials show you code. T3lem hands you the keyboard, runs what you wrote, and checks it.
You watch.
You build.
One lesson.
Three moves.
01
Write
02
Run
03
Pass
Everything
is a mission.
Three missions live on this page. Scroll the lesson, pick a path, pass the quick check. Watch your block climb in the hero.
Which tag makes the main heading?
<?>Hello, world!</?>Pick a tag to finish the code.
7:8
Progress you can read. Every lesson shows exactly how far you are from the PASS.
Try a mini-lesson in your browser.
No accountNo install3 minutes
Code in English from day one.
<main>flex-growaddEventListener<h1>
Inside the
T3lem app.
Four screens you'll use every day. Pick one to see how it works.
HTML / LESSON 01Build your first heading
7:8CURRENT RESULTlocalhost
Saturday, 10:00
Code Night
Browser found <h1>
<h1> is inside main
Heading has your text
PASSTransfer worked. You built a new main heading without being given the answer.
Pick your
path.
Four paths are live in the app today. See every path in detail →
Live in the app
HTML & CSS
Build your first webpage: structure with HTML, style with CSS. Every lesson renders in a real browser.
Live in the app
JavaScript
Add interaction to your page: variables, events and logic.
Live in the app
Vibe Coding
Give AI clear instructions, see what changes, and check the result is what you wanted.
Live in the app
Machine Learning
Ten two-minute lessons: split data, train a model and watch how it improves.
HTMLCSSJavaScriptVibe CodingMachine LearningPythonTypeScriptReactFastAPINestJSRAGAdvanced RAGHTMLCSSJavaScriptVibe CodingMachine LearningPythonTypeScriptReactFastAPINestJSRAGAdvanced RAG
From HTML to
Advanced RAG.
New paths are on the way. Tap one to see where it stands.
Coming soonPython is on the roadmap. Live now: HTML & CSS, JavaScript, Vibe Coding, Machine Learning.
Every lesson ends in a
- Write
- Run
- PASS
Your next level, in your pocket.
T3lem is in beta on iPhone. Join the waitlist and we'll tell you the moment it lands on the App Store.
Is T3lem a website or an app?
An iPhone app. This site is a preview: it shows what's in the app and lets you try a short lesson.
What can I learn right now?
Web development (HTML, CSS and JavaScript), Vibe Coding and Machine Learning. Python, TypeScript, React, FastAPI, NestJS, RAG and Advanced RAG are coming soon.
Do I need experience?
No. The web path starts from HTML basics, step by step, with explanations and practice.