NoteTube - Turn any PDF or YouTube video into a study system

Hey Product Hunt 👋 I built NoteTube because I kept failing at something embarrassing: I'd study for hours, feel ready, then forget almost everything a week later. It turns out that's not a discipline problem — it's a method problem. Ebbinghaus proved in 1885 that we forget ~70% of new material within 24 hours unless we actively reinforce it. So NoteTube does the reinforcement for you. Paste a YouTube lecture or drop a PDF, and it generates flashcards, quizzes, summaries, and notes from that specific content — then schedules your flashcard reviews using SM-2 spaced repetition so the material moves into long-term memory. What makes it different from a generic AI chatbot: it reads and understands your material, generates the exact study formats cognitive science says work (active recall, interleaving, dual coding), and tracks what you've forgotten and when to review it. It's on web, iOS, and Android, and it's free to start — no credit card. I'd genuinely love your feedback — especially on the first-upload experience. What would make you trust an AI with your exam prep?