Instead, the app takes advantage of the strong vibrating feature of the iPhone. When balanced on a flat surface such as a granite countertop, the phone will spin on its own, capturing a hands-free 360 degree video using either the front-facing or rear camera. TechCrunch has a rundown on how it works:
Start by balancing your phone upright on a flat surface (a granite countertop or glass table). The surface has to be really smooth, so don't expect any non-laminated wood or tiles to work.
Once you press "GO", the app will make the phone vibrate at just the right frequencies to force to phone into a twirl. Your iPhone will continue to spin in a circle, which recording video, until you press the "STOP" button.
Though Cycloramic will work with the iPhone 4/4S, it was designed for the iPhone 5's lightweight form factor, which means the older iPhones won’t spin as well. The phone must also be set to "Vibrate on Silent" and "Vibrate on Ring" to function properly.
Cycloramic can be downloaded from the App Store for $0.99. [Direct Link]