AI that teaches, not just answers

Learn anything, one idea at a time

Name a topic and it becomes a lesson: an explanation written for where you're starting from, questions that check whether it landed, and a task that makes you apply it. Your answers are marked, and what you've understood is kept.

One idea works better than a whole field. "Closures in JavaScript" — yes, "JavaScript" — no.

Where you're starting from
Who writes the lesson

3 free lessons left — no account needed. Sign up to keep them and unlock every model.

What being marked looks like

Example from a lesson on recursion

Why does a recursive function need a base case?

"Because computers are fast."

10 / 100 the tutor marks it and says why

That is not what a base case is for. It is the condition that stops the recursion — without it each call makes another and the stack runs out.

Written for you

Same topic, different lesson depending on where you start.

Marked, not applauded

Graded against what the lesson taught, with the gap named.

It remembers

Every lesson keeps its score, and the days add up to a streak.