Built by one person who couldn't
make textbooks stick
Hi, I'm Honza Kadlec — a computer-science student from the Czech Republic, and the one person behind Moldavite.
Moldavite exists because of how I failed to learn things. Whenever I needed to understand something hard — a machine-learning paper, a new algorithm, a topic outside my curriculum — I did what everyone does: opened the PDF, watched the lecture, nodded along… and remembered almost none of it a week later. The one place where things actually stuck for me was Brilliant-style interactive lessons, where you can't move forward without solving something. But those platforms only teach their own catalog. Nobody was going to hand-build an interactive course about the specific paper I had to understand by Friday.
So I built the machine that does. You describe a topic — or drop in a paper, your lecture notes, any document — and Moldavite generates a full interactive course from it: visual lessons, quizzes that check you actually got it, and spaced review so it survives past Friday. I use it myself for my own studying; the first courses in the catalog (Flash Attention, Longformer, byte-pair encoding…) are things I generated because I needed to learn them.
It's a solo project, built in public, and it improves roughly at the speed I can type. If something is broken or a course taught you something wrong, tell me — I read everything: honza@trymoldavite.com.
How the teaching actually works
The claims on the homepage map to concrete mechanics, not vibes:
- Active recall. Lessons are built from interactive steps — quizzes, exercises, manipulable figures — so you retrieve and apply while reading, not after. Retrieval practice is one of the most robustly supported effects in learning research.
- Spaced repetition. Every quiz you answer feeds a scheduler based on the SM-2 algorithm (the one behind Anki): items you got wrong come back sooner, items you know come back right before you'd forget them. The Review tab is that queue.
- Progress you can see. XP, streaks, and per-lesson completion exist to keep you returning — the scheduling only works if you show up.
Who writes the courses
Courses are generated by frontier AI models (Claude-class) from your prompt and any documents you provide, then assembled into interactive lessons by the platform. That's what makes "a course on any topic in minutes" possible — and it also means a course can contain mistakes, like any AI-generated text. Two honest consequences:
- Courses show what they were generated from; when you upload source material, lessons are grounded in it rather than the model's memory.
- Every lesson has a chat where you can challenge anything — and a feedback button that lands directly with me. Community courses are public, so errors get found.
For high-stakes learning (exams, certifications, medical anything), treat Moldavite the way you'd treat a very good study partner: enormously useful, not infallible.
Contact
Email: honza@trymoldavite.com — goes straight to me, not a ticket system.
Companies: Moldavite Stories turns internal guidelines into training courses.