It may be there, but I cannot find it…the ability to "open a file in another app. That is move the file to the other app’s space.
Just as important, but not as critical, would be the ability for another app to “open in” the Sandisk app. This, for example, would allow offline storage of, say, a ‘GoodReader’ pdf file to the Sandisk app.
PS…this obviously is for iOS devices.