Originally Posted by jswinden
Unfortunately the Kindle apps (for iOS, Fire, Android) have at least two major downsides, for me anyway. They segregate books into Amazon content (placed in Books) and non-Amazon content (placed in Docs). They provide no usable ability to categorize/organize books into collections.
Does this also prevent bookmarking between devices? If so, non-kindle .mobi files may just as well be converted to epub and placed in iBooks.