A tutor that makes you think.

Cognosc is an AI tutor for whatever you're learning. It doesn't hand you answers. It starts from what you already know, works through the rest with you, and keeps checking you still understand it.

Why it exists

Asking an AI is the fastest way to be told something and the slowest way to learn it. In a 2025 study in the Proceedings of the National Academy of Sciences, high-school students who practised maths with GPT-4 did 17% worse once it was taken away than students who never had it. The answers were right. The thinking had been done for them.

We wanted the opposite: an AI that keeps the thinking with you, and is honest about where you stand. That is the line on the front page, stop asking AI for answers, start thinking for yourself again.

What it does differently

• You guess first. A guess shows what you actually think, and that is what needs fixing.
• It starts from what you know. A few quick questions, nothing graded, and anything you already understand is left out of your plan.
• It fixes the idea, not just the answer. When you're wrong, it finds the idea that led you there, says what it was in plain words, and gives you a fresh case to check it's gone.
• It comes back. A question from memory a few days later, just before you'd forget.

You can try all four moves on the how it works page, no account needed.

What we hold ourselves to

• Calculated, not guessed. Anything that can be calculated is calculated and checked a second time before you see it. When it can't be checked, Cognosc says so.
• Your answers stay yours. We never sell what you write or use it for advertising, and you can download or delete all of it from your account page. The privacy page says exactly what we keep.
• Free in the beta. The library, every test and goals of your own are free while Cognosc is in beta, with no card.
• Honest about the limits. It isn't for memorising vocabulary or learning a physical skill, and for a quick fact a chatbot is quicker.

Where the goals and articles come from

We wrote the first goals in the library ourselves, each one built around the mistakes people really make on the subject, and the rest come from people who built a goal for their own question and chose to share it. Their answers and names stay private; you get the steps. The articles cite their sources, and the personality tests say how well the science behind them holds up.

Say hello

Something wrong, something missing, or an idea for a goal? Write to hello@cognosc.com, or see how to reach us.