We are looking for a drone for music films and short movies. It is very important to have "tracking object" (not tracking only the pilot). As far as I know, only the new phantom 4 (and solo from 3dr) have this future but both are much more expensive than phantom 3. Searching the google and asking people I came to this app "Vertical". I would like to hear your opinion from your experience. Does this app work smooth and properly for object tracking for pro video ?