All this is unclear to me. I hope the reason is not that I am becoming stupid (or worse, that I was always) 
 
 
I state that I have never used the clouds, nor DropBox. 
I have to register the app, for which I get the app key and app secret values. 
At this point, will my app allow the user to manage his dropbox? Without asking the user account and pw? 
If so, I can not allow two or more users to access a single dropbox, I suppose.
My purpose is to allow two or more users to manage one common file useful to synchronize their local SQLite db.
Is it achievable?
Thanks