hi, sounds like a cool idea, possibly potential as well, so users can share/recycle their books with others or much more, let's sort this out further, also it will require backend, api and UI to make it look well organized or you will provide those? I am a Pro iOS & Android App developer here, I always strive to finish all my projects, also please check my latest reviews, portfolio on my profile page directly, Kind Regards, Iryna!