NotebookLM is Google’s source-based research notebook that answers from your own documents, free to start and now also called Gemini Notebook.
Free; paid tiers via Google AI plans
Quizlet is a flashcard and study platform with AI study tools such as Magic Notes and Q-Chat, free with ads and from $35.99 per year on Plus.
Free; Plus $35.99/year
Anki is a flashcard app that uses spaced repetition to help you memorize, free on desktop and Android with a one-time paid iPhone app.
Free on desktop and Android; iPhone app is a one-time purchase
Consensus is an AI search engine for peer-reviewed research that returns cited answers from hundreds of millions of papers, free with limits.
Free; Premium $8.99/month
Knowt is a free study app that turns notes, PDFs and videos into flashcards and quizzes, with an AI lecture notetaker.
Free with ads; paid plan raises AI limits (price not confirmed)
Zotero is a free, open-source reference manager that collects, organizes and cites research sources, with 300 MB of free cloud storage.
Free; extra storage from $20/year
YouTube learning: Guided courses, quizzes, certification
Free + from $250/yr
