Drone quandcopter help!!

Hi!
I'd like to build a drone with the arduino controlled by an app(Android), but i have no idea how to conect arduino with the app. I have searched on the Inthernet, but nothing, if you know something about this issue can you help me?!?!!
Thanks!!!

You need a connection either bluetooth or wifi, for multiwii flight controller follow this link

http://www.multiwii.com/forum/viewtopic.php?f=8&t=4594