It records your runs as GPS coordinates and maintains your history. It has many features - runs summary, runs maps, speed graphs, links weather reports to saved runs, takes photos mapping them to your locations on the map, talks voice and implements other companion features.
It allows you easy to share your tracks with friends providing export to Google Earth KMZ files altogether with all other recorded details and photos. You can email this directly from the application.
Black Diamond implements a handy control to start and stop recording (in case your mobile is in a sealed bag while on the mountain ski slopes).
More features will be available soon.