CarrierCompare: The iPhone app your carrier doesn’t want you to see

A screenshot of CarrierCompare, which measures the network quality of Verizon, Sprint and AT&T systems NEW YORK (CNNMoney) — A new app hit the iTunes store Friday morning that your carrier probably isn’t too thrilled about. It’s called CarrierCompare. Developed by Boston-based startup SwayMarkets, it allows you to see which carrier offers the best service …