As far as I can see, Fresh Paint is a "Metro app" from the Windows store, and (I just installed it) behaves considerably differently in some ways from a "normal" Windows application such as Paint which uses the standard Windows screen furniture (title bar, menu bar, minimize/restore/maximize/close buttons etc). It is touch-friendly and thus behaves more like a phone app (it is available for PCs and mobile device). So I can see how somebody might think that the 'app' is a different kind of animal from a 'program'.