Inexpensive components that can be used to create an unmanned air vehicle (UAV) are becoming increasingly available. This accessibility opens up exciting applications: from automated resource transportation in developing countries to the scale testing of integrated airspace systems. We present a novel UAV system in which guidance, navigation, and control were performed on an onboard iPhone 4 and a desired trajectory was supplied through a ground based laptop. Additional UAVs can be modularly integrated to cooperatively interact within the airspace. The iPhone 4 bundles much of the essential hardware required for UAV control and communication and offers additional capabilities such as a audio and video recording. The integrated UAV system was flight tested and its efficacy verified.