Well I base this on my experience with Google Analytics which can tell me whether a view was done on a desktop, which browser was used, or on mobile, even whether it was a tablet or phone. So I assume it is the same kind of technology: the app only shows you what views were done on a mobile device, although they don’t seem to separate tablet or phone since I get the same numbers on both.
As for the requests and bookings, the differences appear to be because the desktop data seems to be slower to catch up as you will see a note that says that data may be delayed up to 3 days - so these appear quicker on the mobile than it does on the dashboard, which eventually catches up.
I have been tracking both devices for the past week and I can say that the inquiries/bookings numbers match exactly what I have been getting. I guess it’s easier to track when you don’t have that many
As for the views, I have no way of checking, but in all things web related, if you have gone to a site, a page or a listing, it is considered a view, whether you are logged in or not, so I would venture to guess that it’s the same with airbnb as I don’t see why they would break with traditional ways of reporting data. My experience has been that you can’t go to a specific listing unless you are logged in, as I experienced that recently at my cousin’s place to whom I wanted to show my listing; I had to log him in with his Facebook account in order to get to my listing. Maybe it has changed since that “tweet”.