Since the introduction of the App Store, developers have been writing applications that attempt to extend the usability of your iPhone beyond what the device itself can do. From credit card readers to lightbulbs to fitness accessories, it seems like almost anything can be controlled with an iPhone now. The iSpy Helicopter is no different. If you’re familiar with the concept of the Parrot AR Drone, the iSpy Helicopter will immediately make sense. With just your iPhone, a special app, and a small transmitter that plugs into your headphone jack, you can pilot your own mini helicopter. How well does it work? Read on to find out.