I'm looking for something like this that will allow me to save files from other apps to the external drive, and then re-open them in those other apps. Does this show up on the iOS picker so you can move a file to here from another app? And can you then open a file from this app with another app, or move a file from the external card back onto the iPad?
I have no need to use this for pictures or videos, but instead I want a good way to back up other types of files.