This is exactly what Nouswise is!! We unlimited number of books, understands your highlights, online citations from the book, you can take notes, organize and edit them, and so many other capabilities. What else you want? Check it out:
A Perplexity meets Kindle reader app would be an incredible bicycle for the mind. It would unlock reading original text instead of analysis, help weave together the history of ideas, and be all around a next level kind of autonomous vehicle for the mind
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Nouswise is an AI-powered research agent that delivers trustworthy, precise responses drawn from a carefully curated library, perfect for high regulated industries.