The app is incredibly useful. It has a database of more than 30-thousand courses around the country, with more being added. It offers great graphics, maps and yardage to holes and hazards of the very course you're playing.
You can use the app to keep score for a foursome. It keeps track of all your stats from past games, even offering club tracking from tee-to-cup.
The app is free. Upgrade for 20-dollars and get precise GPS distance info to the front, back and center of green.