Extremely Poor - unusable

Adobe really did not understand a thing.
First you need to synchronize books manually from another device - cloud distribution anyone?
Even worse: the bought! Ebooks (ITIL SOA) dont fit to screen in neither portrait or landscape. Even with combining both orientations you are unable to get all informations. There is also no zooming possible. (iPhone 6s)
This is really the worst offering of one of the bigger companies (maybe except Adobe Flash...)
This really is no concurrence to kindle or iBooks - unfortunately ITIL and PRINCE2 materials are exclusively electronically available on Adobe Shittical Editions

mzwbn about Adobe Digital Editions, v4.5.1