These apps are designed to help you keep track of the physical books you already own. Libby, the library app - App Store - Apple
These apps connect to your local library card so you can borrow ebooks and audiobooks for free. Library Book App Android
Seamless synchronization across devices. You can start a book on your Android phone and pick up where you left off on a tablet or web browser. These apps are designed to help you keep
Depending on your goal, the "solid features" differ significantly: the "solid features" differ significantly: