[xalava]

Interesting solution,thanks ! However, upload seem to only be available from the desktop and annotations are quite primitive (especially on phone/ipad). So it works perfectly for books, not so much for storing and annotating all documents

[wronghorse]

You can also upload from iOS by using the "Copy to Play Books" option in the Share menu.

[senorsmile]

you can upload epubs from the android app. I just downloaded a file and uploaded it on my android device yesterday.