For me the best eBook wheels for Android. The Reader is the most popular formats, including PDF, all of which are displayed perfectly. What the Reader can not compensate for the faulty ..... conversion of the original. Because all I know Calibre converter including inadequately convert (incorrect hyphenation and line breaks) is due for a flawless presentation vie rework. The problem relates to the books directly available as an eBook. The search function works very well. Each book is keywords can be assigned and a genre correlating them. Since Amazon rarely provides updates and apps are generally obsolete, I advise of a purchase from ....... updates appear, if it for what are, only with several months of delay.