Eureka.AI is a free AI Socratic tutor for students: paste a YouTube link, web article, or PDF and it writes chapter-by-chapter study notes with summaries, quizzes & flashcards. Unlike answer-dumping chatbots, it teaches by guided questions and adapts to your level. Launch gift: everyone gets a 7-day Pro trial (unlimited AI notes, quizzes, flashcards) + beta access to voice features — auto-activated on signup, no credit card needed.