I like the idea of the GeoFence, but I found that it quickly drained my battery (it went from 60% to dead overnight, when normally it only drop 5-10% overnight) on my iPhone 4S. Is the GPS accessed constantly while using the GeoFence, and is there a setting I can modify that makes location polls less frequent?
I understand being in a weak cell signal area can cause background location updates to happen more frequently, but in this case, I was in an area with a strong signal (for example, Google Latitude will only update once when in this same location).