You are asking in the CC forum, and you list Android (really not a reader without an app... BUT)
Your Sig says you want an Aura1 (older model?) that does not use CC?
(I have not tested)
Your Android has a Browser. Recent Calibre 3 Content Server allows
some metadata edits via Browser.
Or is the reason for this post: Use CC offline for a later sync? (a good plan)