If you already own the parrot flypad controller you can try the free android version to see if it works.
https://play.google.com/store/apps/details?id=com.Freeride.Freerider_FREE
A lot of people are using their regular RC radios connected directly via USB or a USB dongle using a USB OTG adapter. (You can also try an Xbox or Playstation controller if you happen to have one of those laying around, although such gamepads don't really provide the fine control that is optimal for quadcopter flying).