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 connect to your local library card so you can borrow ebooks and audiobooks for free. Library Book App Android
Widely considered the gold standard for ease of use. Seamless synchronization across devices
Offers immediate access without waitlists for many titles. the "solid features" differ significantly:
These apps are designed to help you keep track of the physical books you already own. Libby, the library app - App Store - Apple
Depending on your goal, the "solid features" differ significantly: