Hi,
First, this is one of the best apps I've ever used on Android. Great job!
When there is no target, the "Guiding" display at the top simply says "No target!". I think it would be more useful just to show the distance and bearing from the current location to the center of the map instead. This would be nice if I'm at a lookout, get a compass bearing and distance estimate to some unknown mountain, then use this feature to poke around the map and see what mountain it probably is. Thanks for listening.