Android Drone Controller and FPV

It is an app to send orders to a QuadCopter. and take photos and record video. It should have 3 modes: Lineal Move, Orbit Me, Follow Me. The different data should be entered in the app by the user, using sliders after selecting the mode. 1.-Order the Quadcopter to move X meters away, and up. 2.-Order the Quadcopter to move in circles above us, given altitude and radius, us being the centre of the circumference. 3.-Order the Quadcopter to follow as given altitude and distance in between. The camera has always to focus us during flight. Also, we want the app to let us see in our Android/IOS Device the image in real time that is being recorded by the camera mounted in the quadcopter. It should allow us to capture photo/video from our smartphone whenever we decide to. The photos and videos should get automatically saved in our smartphone memory. Thank you!