About Lemma

Built by a student,
for every student

Lemma started with a frustration: solving hundreds of problems with no way to know if the reasoning was correct. So we built the feedback loop that should have existed all along.

The origin story

When you are studying for a competitive exam like JEE Advanced or the AMC, the biggest challenge is not finding problems. It is getting meaningful feedback on your approach.

What if there was a system that generated problems at exactly your level, watched you solve them, and told you precisely where your logic diverged from the correct path?

That is what Lemma does. A 3-layer verification system that checks your work deterministically, symbolically, and with AI reasoning analysis.

What we believe

Obsessive care

Every problem, every feedback message is crafted with the student in mind.

Honest feedback

We never sugarcoat. If your reasoning is wrong, we tell you exactly why.

Learning over answers

We build understanding. The answer matters less than how you got there.

Accessible to all

A generous free tier ensures preparation quality is not locked behind wealth.

Want to help shape the future of learning?

We are always looking for passionate people who believe math education can be fundamentally better.

Get in touch
E = mc²
e^iπ + 1 = 0
∇ × B = μ₀J
F = ma
∑ 1/n² = π²/6
∫₀^∞ e^-x² dx

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Neither should your preparation.

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