Ping is Golf company successful in making golf equipment. They introduced the "iPing", golf application that can be obtained free of charge, wireless, and can be taken anywhere to identify the type of punch you, punch angle analyze and estimate the speed.
After making a stroke, iPing will record the consistency of your strokes on each hole and recorded a handicap. When your game the better, then the handicap will be reduced.
This application can be used on iPhone 4and iPod Touch, can be free downloaded at the App Store beginning June 20, 2011.