Show HN: Fenzo – Build an interactive course on any topic

Fenzo, a new AI-powered platform, lets users generate personalized interactive courses from any topic, question, or uploaded notes. The tool aims to improve knowledge retention through active learning and has gained traction among students, engineers, and teachers.

The perfect course, every time. Type any question or upload your notes. Get an interactive course, built just for you. or try one of these Upload your notes, test results, or a textbook chapter — we’ll build you your own personalized prep course. One question in.A structured course out. Here's a quick demo. “Agile or Waterfall — what fits your project?” 50 engineers, a 200-page spec, a legally-mandated Q2 deadline, and board-approved scope changes. Why Agile leads Scope Flexibility and Requirement Uncertainty both push moderately toward an Agile fit. Stop prompting. Start learning. Most AI tools were built to answer questions. Fenzo is designed to make sure you actually internalize the answer. See the difference for yourself — paste a prompt you've used on ChatGPT. Backed by the science of learning. Finally, a learning platform actually built for the AI era. Master any topic through personalized, interactive lessons. Active learning passive learning. AI atrophy is real. Skill retention over time · with vs. without practice Answers ≠ understanding. Real courses, created by the community. Here's what people are learning right now with Fenzo. Loved by curious minds everywhere. Jamie L. Physics Student "I typed in 'quantum entanglement for beginners' and had a full interactive course in under a minute. The flashcards alone are worth it." Sofia R. Software Engineer "The live code editor is exactly what I needed to practice Python without switching between ten different tabs. Genuinely saves me time." Dan T. High School Teacher "I started using Fenzo to prep before my own lessons. The AI tutor asks back-questions I wasn't expecting, it's become part of my planning routine." Priya M. History Enthusiast "Fenzo turned my afternoon curiosity into a two-hour deep dive on Byzantine history. I genuinely didn't expect to finish the whole thing." Leila K. Debate Coach "Generated a course on stoic philosophy for a debate class. 12 lessons, solid structure, ready in under 3 minutes." Omar F. Product Manager "I've tried Coursera, Udemy, YouTube playlists. Fenzo is the only one that felt like it was built for exactly what I needed that day, not a general audience." Finally get it. The only way to understand what Fenzo really does is to use it. Takes one minute.