This app is a complete waste of time and I urge others not to download it as it simply does not work. It is in the Google playstore but it quite simply is not compatible with the chromebook I am using. Why it is here beats me !! Despite numerous contacts with Adobe, they do not want to recognise there is an issue with it and I have yet to get one single reply from them. It just means I cannot download any books from my library and will just have to purchase paperbacks. Come on Adobe ......