Do you want to improve your game on the green and know how you're doing? There's an app for that, thanks to the iPing.
If you want to get some consistency and results when you're golfing, the iPing will be perfect. This app will measure stroke type and analyze your impact angle and tempo. There are also a variety of modes to help you determine where you need improvement. If you get better, your putting handicap will slowly go down. Simply attach the cradle that holds the iPhone to the club and you're good to go. Don't worry about it flying off: since this app is strictly for measuring your putting, you'll have no problems unless you putt with aggression.
Try out the iPing and see if you can take out the competition after a few practices with it.