Clarity Notes
AI notes, quizzes & flashcards from any YouTube video
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#34 of 99 projects
Jul 16
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busiest day Jul 28 (4 people)1 today
A Chrome extension + web app that turns any YouTube video into structured notes, summaries, quizzes, flashcards, and a chat interface over the video's content. Built solo, end-to-end: video-processing pipeline, extension, web app, auth, and billing. Stack: Next.js, React, TypeScript, Tailwind CSS, Supabase, OpenAI, Gemini, YouTube Transcript API. Launched publicly, earned real paying customers (~$160 in sales), and went through a full pricing iteration from subscription to credit-based.
