GeofencingApi is great feature for making notifications when user enter to specific place on map and also exit from specific place.
I’ve updated official GeofencingApi tutorial to make it more visual.
Here application which able register geofence just after map click. Use it for register your place and test how it works. This app have nice overlays which show whole geofence area (Red circle).
Here is YouTube with app in action
And link to github