I needed an app to ping out my location during a recent 100+ mile run. I used this app to email my position to my team as well as a live map. It was easy to use and worked flawlessly even when I was very tired. This app, my iPhone (with its built in maps), an external battery and a water-tight baggy were the only navigational/GPS equipment that I used. I intend to use this app to ping out my location on my next 200 mile run. Well done Mr. Hoffman!
ZOD about Basic GPS (Now with UTM, MGRS, and Email)