Cogent

Turn your study notes into fun, interactive quizzes with Raena AI. Make studying a breeze and learning more engaging. Overwhelmed by information, students face low retention, stress, and burnout with traditional study methods. Students are buried under piles of notes, struggling to organize and review them efficiently. Despite hours spent studying, many students find that they retain only a fraction of the material. Ineffective study methods cause frustration, leaving students feeling unprepared. Discover a smarter, stress-free way to study by converting your notes into engaging, interactive quizzes that boost your retention and confidence. Let Raena AI do the heavy lifting by summarizing your notes into concise, easy-to-review sheets. This helps you quickly grasp the key points. Upload your documents and chat directly with an AI tutor. This feature allows you to ask questions, clarify concepts, and get personalized assistance on any topic.

LexieLearn is a study app that turns photos of notes, textbooks, and worksheets into flashcards, quizzes, and practice tests automatically. Students snap a photo and get study materials in seconds, no manual card creation, no typing, no account needed. Built on cognitive science research: the FSRS spaced repetition algorithm schedules reviews at optimal intervals, active recall questions test real understanding, and think questions use AI to evaluate open-ended answers with conversational feedback. Works with any subject in 34+ languages. Used by 4,500+ students for biology, chemistry, history, languages, and exam prep (GCSE, A-level, AP). Available on iOS and Android. Key features: automatically created flashcards and quizzes from any photo, spaced repetition with FSRS, image occlusion for diagrams, audio player with captions, offline storage with no cloud dependency. Ad-free, no data tracking, no account required.