In reviews on the Android Market for this app, those who didn't like this one recommended a different one that apparently has the same function, called "
Sensorly".
Sensorly has the same overall user-rating as the Rootmetric app (3.9/5), so I downloaded/installed both.
I haven't tried either yet, but I will. I live in the relative boonies, so plenty of opportunity to contribute new data!
Sensorly doesn't support the iPhone, while RootMetrics supports Android and iOS, so RootMetrics has a larger potential user base.
The maps in the areas I frequent had Sensorly data but not a lot. It also looks like Sensorly focuses mainly on signal only where RootMetrics also has a data-speed component.
If Sensorly adds iOS support I might give it a try. I support anything that shows carriers *true* coverage as opposed to what they "say".
In the RootMetrics app or on the RootMetrics site - check out Memphis TN on AT&T. Look southeast from Memphis to Oxford,MS and Sardis reservoir. All of those tests between Memphis and down to Oxford are mine. When I started, Oxford had no test run, and none of the roads in the area had been tested. This past weekend on a road trip across TN to the Smokeys we also ran tests in a ton of places...
If you look at Portland, OR on the Sprint results, almost the entire west side has been covered by my budy since he got his iPhone around the new year. He has a job where he drives around all day so he just let's tests run and he has mostly filled in the whole west side. Haha...
Whichever you use - they get addictive in some ways...