Hi,
I may be wrong but at the moment it doesn’t seem like you can ‘Open in’ any of the files on the flash drive into other apps from within the ios app? It only gives you the option to send it by email or messages. To me this makes the drive/app pretty useless as the most common usage scenario (I would think) is for someone to put a file (word/excel/pages etc) on to the drive from a computer so that you can open it and edit it on iPhone/ipad. The other thing I encountered is that when I ‘open in’ a pages/numbers document into the ios app it seems to compress it into a zip file (not sure if that is the fault of this app or of pages and numbers),
Regards
Dan