Knowt

Knowt is a study app built around the flashcard, positioned squarely as a free alternative to Quizlet. Creating, sharing and studying flashcard sets is free, including an unlimited learn mode that mixes multiple-choice, true/false and written-answer questions, and the app tracks progress on each set. Students can also import existing Quizlet sets and browse a library the company puts at five million shared resources.

The AI layer, run by an assistant called Kai, is about getting material into that format fast. Upload up to 30 files at once — PDFs, PowerPoints, images, videos, a YouTube link or files from Google Drive — and Knowt generates notes, flashcards, practice tests and study games from them, with options for the note length, structure and card style (regular, fill-in-the-blank or question-and-answer). The AI lecture note taker records a class live and produces the same set afterwards. An exam predictor reads your syllabus and course files and builds a study plan around what the professor emphasises, Kai can quiz you out loud as a voice tutor, and any note or card set can be turned into a short podcast for listening practice. For standardised tests there are AP practice and free-response rooms, an AP score calculator, and SAT and ACT mock exams with progress tracking.

Knowt runs on the web, iOS, Android and as a Chrome extension, with separate tools for teachers and schools. The Basic plan is free, with unlimited file creation, live collaboration and storage. Ultra costs $7.99 a month billed annually ($95.99 a year) or $24.99 month to month, and adds an ad-free experience, the AI summarisers for PDFs, video, images and slides, the lecture recording summariser, the podcast generator, the voice tutor on all files, and full AP, SAT and ACT prep.