Question: I'm looking for a study aid that uses AI to create interactive learning tools from PDFs and videos.

Revision AI is one of the most powerful tools, turning lectures, notes and PDFs from textbooks into interactive flashcards. The service uses AI to create accurate flashcards and group them in the most useful way, so it's a good option if you want to create your own study materials. It's got options for free learn mode, scheduled flashcards and export to Anki, a popular tool for flashcard enthusiasts, too.

Another good option is StudyFetch, which turns educational materials like PowerPoint presentations, lectures and study guides into interactive study materials. It's got an AI tutor called Spark.e that offers personalized feedback and guidance. StudyFetch can handle lots of file formats, so it's good for turning flashcards, quizzes and other study materials into interactive materials.

NOLEJ takes a different approach, using AI to create interactive courseware and a global knowledge graph from many sources. It can turn input data into interactive videos, flashcards and other learning materials, so it's good if you want to create your own interactive learning materials. It's geared for teachers who want to spend less time preparing lessons but offer students a more engaging learning experience.

Last, ChatTube AI combines YouTube videos and PDF documents with ChatGPT technology, letting you interact with the material in real time. You can create quizzes, turn PDFs into interactive study sessions and get answers to questions with ChatGPT, so it's good for distance learning and research.