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Java & Python — interactive, in-browser learning

Learn to code by actually coding. Right in your browser.

Write real Java and Python from lesson one — no installs, no setup, no excuses. Teaching a class? Learnix is a full classroom platform too.

HelloWorld.java

grades.py
1# Unit 7 · grouping with dict comprehension
2scores = {"Alice": 92, "Bob": 73, "Cara": 88,
3 "Dave": 65, "Eve": 95}
4
5passing = {n: s for n, s in scores.items()
6 if s >= 70}
7
8avg = sum(passing.values()) / len(passing)
9print(f"{len(passing)} passed · avg {avg:.1f}")
10# → 4 passed · avg 87.0
17
Units. Per language.

A full college-grade syllabus, not a tutorial playlist.

200+
Interactive lessons.

Every concept has a worked example, an exercise, and a graded check.

0
Installs required.

Open a tab. Start writing real code. It runs.

Times you can hit run.

No quotas, no compile credits. Iterate freely.

What's inside

Built to be used.

01

Runs in your browser

Real Java and Python execution, zero installation. Open a tab and code in 5 seconds.

02
📚

Structured curriculum

17 progressive units per language. Lessons, exercises, quizzes, unit tests, projects.

03
🎯

XP, streaks, badges

Stay hooked with points, daily streaks, and unlock-able badges as you progress.

04
👨‍🏫

Classroom dashboard

Teachers create classes, assign work, and see exactly where every student is stuck.

05
🧠

Instant feedback

Every exercise checks your output the moment you run it. Know in milliseconds, not days.

06
🎨

Pro editor

Monaco — the same editor that powers VS Code. Syntax highlighting, autocomplete, the works.

Write. Run. See.

Watch your code come alive.

FizzBuzz.java
terminal
$ java FizzBuzz
Two languages

One platform.
Same depth.

Java

From Hello World to design patterns, generics, and Spring Boot.

OOP Collections Generics Spring
🐍

Python

Modern idioms — comprehensions, generators, decorators, dataclasses, async.

Dicts Decorators Generators Async
For educators

Run an entire CS class.
Without lifting a pen.

Stop grading code by hand. Stop chasing down who turned in what. Learnix gives teachers a full classroom with auto-graded assignments and real-time progress.

  • Create classes, invite students with a single code
  • Assign any lesson, exercise, or unit — auto-graded
  • See who's stuck, who's flying ahead, who hasn't started
  • Export grades to CSV for your gradebook
Period 3 — AP Java · Unit 5
AC
Alex Chen
92%
MR
Maya Reyes
78%
JK
Jordan Kim
64%
SP
Sam Patel
45%
For students

Learn for real.
Stay hooked.

Forget passive tutorials. Every lesson hands you a real problem and the editor to solve it in. Earn XP, build streaks, unlock badges.

  • Write & run code from lesson one
  • Earn XP, build streaks, climb the leaderboard
  • Unlock badges for milestones & mastery
  • Build a portfolio of real projects you can show
Level 14 · Python 🔥 23 day streak
Generators & Iterators
4,820 XP5,000 to level 15
🏆
🎯
🚀
What learners say

Real progress.
Real words.

I went from "what's a variable" to writing my own bank-account class in three weeks. The exercises after every lesson are what finally made it stick.

MR
Maya R.
Student · learning Java

My AP Computer Science class moved to Learnix mid-year. Auto-grading saved me hours every week, and my pass rate went up. The classroom dashboard is everything I wanted from Codecademy and never got.

JT
James T.
High-school CS teacher

No installs, no setup, no "your version of Java is wrong". I clicked Run and it ran. That alone was worth the switch.

AC
Alex C.
Self-taught learner

The Python curriculum is the most modern one I've seen — comprehensions, dataclasses, type hints, generators all covered properly. Not another "let's print Hello World 30 times" course.

DK
Dana K.
Bootcamp instructor

The streaks got me hooked. 47 days in and I'm building real projects now. Best decision I made this year.

SP
Sam P.
Student · learning Python
Pricing

Free today.
Honest pricing soon.

Learnix is completely free right now while we finish building out the classroom platform. Paid plans are coming — here's exactly what to expect, with no surprises. Existing accounts keep all their progress, and we'll email you well before anything changes.
Free Forever
Try it Free
$0/mo
1 learner account · 1 language · Unit 1 only

Write real code from day one — no credit card, no catch.

  • Full Unit 1 of Java or Python
  • In-browser code execution
  • Lessons, exercises & mini-quiz
  • Units 2–17 locked
  • Projects & certificate
All Access
All Access
$16/mo
1 learner account · every language we offer

Unlock every language — current and future — in one plan.

  • Everything in Core
  • All languages: Java, Python & more
  • Every future course included free
  • No classroom / teacher tools

14-day free trial on paid plans · no credit card to start · cancel anytime

FAQ

Common questions.

Do I really not have to install anything?
Correct. Learnix runs entirely in your browser — code editor, Java compiler, and Python interpreter all included. Open a tab and you're coding.
Is it actually free?
Yes — today the whole curriculum is free. We're moving to a paid model soon, but everyone who signs up before the change keeps early-bird pricing.
I'm an absolute beginner. Will I be able to follow?
Unit 1 of every language assumes zero programming experience. We explain every concept the first time it appears, with worked examples and exercises.
Do you support teachers and schools?
Yes — Learnix is a full classroom platform. Create classes, assign work, auto-grade, and track every student's progress. Request a school quote from pricing.
Which languages do you support?
Java and Python today — both with the full 17-unit curriculum. JavaScript, C++, and Go are on the roadmap.
Will my progress sync between devices?
Yes — your account stores all your XP, streaks, badges, and lesson progress in the cloud. Sign in from any device, pick up where you left off.

Ready to write
your first program?

Join the learners already building real apps with Learnix.