Our mission
Foundations in maths, computer science and AI — starting from zero.
The next generation will grow up alongside AI — and it all rests on maths and computer science. That understanding shouldn't belong to a few well-resourced schools; it should be within reach of anyone curious with a hand-me-down laptop. That's why Astra exists — to make those foundations affordable and accessible.
Why we built it
Most tools that teach coding stop at block puzzles and games — syntax, not thinking. But the real skill behind maths, computer science and AI is problem-solving: ask a question, gather the evidence, spot the pattern. We teach that — with real tools, from the very first lesson.
How we teach: every lesson is a Case
We start from something you already understand — “Am I growing faster than my sister?” — and hand them real Python to investigate it. They write code, press Run, and a chart appears with the answer. Seeing beats being told.
- 1The Case
- 2Your Tools
- 3Investigate
- 4The Reveal
- 5New Case
The tools grow with the learner: Matplotlib → NumPy → Pandas → scikit-learn — from a first bar chart all the way to training a real machine-learning model.
Free to start, one simple subscription
The youngest bands and the first Cases are free — enough to fall in love with it on any device. One family subscription unlocks the full path through statistics, machine learning and deep learning, with progress saved for every learner. See plans and pricing or browse the case library.
Our commitments
Accessible by design
Runs in any browser on low-cost laptops and tablets — no installs, low bandwidth after the first load, full keyboard use, and light & dark themes that both meet AA contrast.
Free at the core
Nothing that blocks a curious learner from the core ever sits behind money. Level 1 is free forever.
Safe for every learner
Every Case is reviewed before it ships. We collect the minimum data, and where a learner is a child we hold their safety above every other consideration.
Simple, honest pricing
A generous free tier to start, one clear subscription to unlock everything, and cancel anytime. No ads, ever.
See it for yourself
Crack a real case in two minutes — real code, a real chart, a real answer.
▶ Try a free Case