This app has the bare minimum capability. I understand and fully agree it is better to have your own app. I’m you have more control and can keep 100% of the profits. However, I’m a fan of ebooks and saving trees. Therefore, I prefer using a platform that closely resembles a hard copy of a book. I’m able to jump around in the app. This app doesn’t have that capability. I have to keep hitting the back button until I arrive at the section I want to review. There’s no table of contents or ability to bookmark, highlight or makes notes. Please consider opening your next book up on other platforms as well. This platform doesn’t offer me the ability to add this purchase to my existing library.