Studyflash

Studyflash has a free plan with no card required: flashcards, quizzes, spaced repetition and unlimited chat with Max. Premium lifts the generation limit and adds mock exams and podcasts. The app shows the price for your country. Yes, there is a free plan, and it does not ask for a card. You upload your lecture material, turn it into flashcards, quizzes, summaries and mind maps, and study all of it as much as you like. The part that is metered is making new material: a free account comes with a monthly allowance of AI generations. Chatting with Max, the AI tutor, is unlimited on every plan, the free one included. Premium takes the cap off generating and opens up a few things the free plan does not have. The app shows what Premium costs where you are, in your own currency, before you pay.