Lexora: Turn any notes into AI flashcards with spaced repetition

Hi Product Hunt! 👋 I'm Iñaki, founder of Lexora. Flashcards work, but two things always slowed me down: making them takes forever, and most people review them at the wrong time and forget anyway. Lexora fixes both. Describe a topic ("Create 10 flashcards on cell biology") or upload your notes as PDF/Excel, and the AI builds a full set in seconds. Then spaced repetition decides what you review each day based on your own forgetting curve — so you spend time on what you haven't mastered yet. There are flexible study modes (from quick review to exam simulations), gamification with streaks and challenges, folders and tags, real-time sync across mobile and web, and analytics that predict when you'll forget a concept. It's built for real students — university, competitive exams, languages — and it's free to start, no card needed. I'd love your honest feedback on what to build next. Ask me anything!