This is a great web app! so way to go!
A few annoying thing I encountered:
  • The mobile app doesn't allow rotating the screen and reading using the wide axis of the phone. This is very surprising as its an absolute trivial requirement. It also renders the mobile app useless for actually reading documents.
  • Searching for a word in the app always starts from the top of the document where you would expect it start from where you are currently placed. Very annoying.
  • There's no way in the web app to go to a specific page by page number. The web app does have this feature however (probably inherited from another product you are using).
Despite these problems, the app is fast, reliable and nice to handle, leaving dust to the competition in that regard (OMG try opening a shared document on Adobe reader, that is HELL).
bye :)