With millions of cellphone users running around, crowd-sourcing has become a valuable method to verify information like the locations of hotspots and cellphone coverage. RootMetrics has been a source of accurate cellphone coverage maps for the iPhone, and now hits the Android platform to track user's real-world coverage.
The premise behind RootMetrics is simple: users install the free app which tests voice and data coverage at regular intervals and on demand. The test results are pulled in by RootMetrics and aggregated with those of other users. Over time the map of any given urban area gets filled in showing signal strength for both voice and data, by carrier. It is a natural fit for using crowd-sourced information, due to the number of users in populous regions. The resultant coverage maps are more valuable to customers as they represent real-world tests and not an arbitrary map supplied by the carriers.