FBReader is free, fast and highly customisable e-book reader for devices running Android OS.
Ranked in these QuestionsQuestion Ranking
Pro Simple and fast
FBReader, while offering many options is simple in design, with that allowing for fast use.
Pro Cloud sync
FBReader has built in Google Drive sync for the users files, allowing them to store their eBooks online, not taking up room on their local storage.
Pro Built in eBook store
FBReader features an in built eBook store for users to download eBooks onto their devices through the app.
Pro Cross-platform and open source
FBReader is a completely free cross platform eBook reader that is also open source.
Con UI is bad
User interface is confusing and ugly