10 Free and Low-Cost Mobile Wireless Tools, March 06, 2013 There's no replacing meaty, licensed tools for wireless network support. But a growing number of free and low-cost apps are available when all you have is a smartphone or tablet at hand. Most of the gems live in the Android space, so you iOS developers need to get to work.
OpenSignal for Android
Publisher: OpenSignal, Inc.
OpenSignal is a wonderful tool for characterizing both Wi-Fi and mobile signals. It integrates with Google Maps to give you good detail on the cell you're connected to and those nearby, along with very effective WLAN reporting and test utilities. I'm floored that this one is free.