I use the Foursum app. It's a free app that includes GPS. You can track scores, putts, FIR, GIR. In tracking these, it will also calculate your handicap, scoring average, driving accuracy, putting average, GIR %. You can also use it to set up games and wagers with friends who also have the app and uses real-time scoring so you know where everyone stands as far as score. It's a great all-in-one golf app!