# LearnLens Studio > Transform YouTube videos into structured courses with AI-powered active recall and cognitive science principles. LearnLens Studio is a learning science-powered platform that transforms any YouTube video into a structured learning course with personalized paths, active recall quizzes, and spaced repetition—all backed by peer-reviewed cognitive science research. **Core Features:** - AI-powered course generation from any YouTube topic - Curated by teaching clarity, not views or popularity - Scaffolded learning paths (foundations to advanced) - Active recall quizzes at optimal moments - Distraction-free: trimmed intros, focused teaching segments only - Progress tracking with mastery-based progression **Learning Science Principles:** Built on Cognitive Load Theory, Active Recall, Zone of Proximal Development, Testing Effect, and Interleaved Practice. Each feature is backed by decades of peer-reviewed research from educational psychology. **How It Works:** 1. Enter any topic you want to learn 2. AI curates and analyzes best YouTube educational videos 3. Course structured in scaffolded progression (easy → complex) 4. Active recall quizzes inserted at strategic points 5. Progress tracked with visual completion indicators **Use Cases:** Programming, academic subjects, professional skills, hobbies, test preparation, continuous learning. **Pricing:** Free during beta. No credit card required. ## Core Pages [Home](https://studio.learnerslens.ai/) - Main landing page with course search [How It Works](https://studio.learnerslens.ai/docs) - Detailed explanation of learning science principles and platform methodology [Popular Courses](https://studio.learnerslens.ai/popular) - Browse community-created courses across all subjects [Blog - Learning Science Insights](https://studio.learnerslens.ai/blogs) - Research-backed articles on effective learning ## Blog Posts [Why Watching Videos Doesn't Lead to Learning](https://studio.learnerslens.ai/blogs/why-watching-videos-doesnt-work) - Passive watching vs active recall [The Forgetting Curve Problem](https://studio.learnerslens.ai/blogs/the-forgetting-curve-problem) - Spaced repetition and memory retention [Zone of Proximal Development](https://studio.learnerslens.ai/blogs/zone-of-proximal-development) - Adaptive difficulty matching [Illusion of Fluency](https://studio.learnerslens.ai/blogs/illusion-of-fluency) - Why highlighting and re-reading fail ## Optional **Technology Stack:** Next.js 14, React, FastAPI, OpenAI GPT-4, DynamoDB, AWS **Related Products:** - LearnLens Chrome Extension (https://learnerslens.ai) - Quick summaries and quizzes on any YouTube video - Course Builder API - For educators creating structured video courses **Contact:** learnlens@trilogy.com **Competitive Positioning:** Unlike YouTube (unstructured, no active recall), Coursera/Udemy (paid, limited catalog), or Khan Academy (limited curriculum), LearnLens combines YouTube's vast library with evidence-based learning science, completely free during beta.