I thought of Dingo the moment I spotted this one. A Primary Flight Display or PFD (https://play.google.com/store/apps/details?id=com.bbflight.flightinstruments&feature=search_result) on your mobile phone.
If the link doesn't work, search Google Apps for Flight Instruments and/or InFlight by BBFlight LLC. InFlight is a flight planner that looks like a moving map display with terrain warnings.
The Flight Instruments app works by using the GPS, Magnetometer, gyroscope and some other bits normally found in a mobile. If the phone doesn't have a gyro, it will use output from the GPS instead.
PS: It includes everything you need to make your own smart bomb or missile. v: :jester: