Knowt

Knowt began as a free alternative to mainstream flashcard apps and has grown into a broader AI study workspace. You bring in material — typed notes, uploaded documents, PDFs, YouTube videos or recorded lectures — and Knowt generates study sets, flashcards, summaries and practice tests from it. A built-in note editor lets you write and organise notes, then turn any section into flashcards with a couple of clicks. Spaced-repetition review, learning modes and practice tests then drill the material until it sticks.

The platform also leans heavily into exam preparation. It publishes free study resources and guides for standardised and advanced-placement exams, offering sets, practice questions and explanations that students can work through, which is a large part of why it draws a student-heavy audience.

Knowt runs on a freemium model: the core flashcard, note and AI study features are free, with an optional paid tier that raises AI usage limits and unlocks extras. Because it is free at the point of use, it is a common substitute for paid flashcard subscriptions in schools and universities.