Both record. Only one of them plans
This is the closest comparison on the list: Turbolearn and NoteLinkAI both sit in the lecture, transcribe accurately, and hand back notes, flashcards and quizzes. If your need ends at 'turn this lecture into something readable', they are close enough that the decision is preference. The divergence is everything after that. Turbolearn's unit of work is a lecture; NoteLinkAI's is a course. One produces an artifact, the other maintains a body of material that grows across a term and knows when your exam is.