I read about 50 books a year, and most of them are via Libby. This app provides me with audio and Kindle books for free that I borrow from my local libraries. I always have a book on hand when traveling, commuting, or to listen to while doing chores. My most useful features are building my wishlist of books I want to read eventually and the notifications they provide when a book you've put on hold is ready to read. I've delayed the delivery of a book and even extended the loan on a book that took me longer than expected with just a few clicks. The app experience is very straightforward. I recommend this for anyone serious about reading more and spending less on physical books.