Note: This app is designed to be used together with the iPLAYMATE Tennis ball machine bluetooth communicator, available at www.iplaymatetennis.com. Drills are easy to create because the App is preloaded with shots at 3 different skill levels. Its also a great way to create drills for your PLAYMATE ball machine and then share those drills with your friends. Using bluetooth, you can remote control the ball machine without draining lots of battery power. Features - Start/Stop drills with Apple Watch - Track balls hit & duration with Apple Watch - Preloaded with shots - Preloaded with FREE Drills - Remote control your PLAYMATE ball machine - Create drills - Share drills with friends - Organize drills by type, skill, player names, or anything else - Create library of drills for the club - Designed with bluetooth for longer battery life - Supports device rotation