If you want to experience all the features of this free app, you need a USENSE tennis sport sensor.
USENSE is a innovation of sports training system (application + motion sensor + background data analysis) USENSE can help you on capturing and analysing of your performance, you just need to install a sensor USENSE in any tennis racket handle, which can get feedback, and to see your movements and style of play on an IOS phone.
To analyze your shot such as Serve, Topspin, Slice etc.
Understand your movement level by shotting type and the strength chart.
Timely ranking, so that everyone recognize their progress and direction
Share your insistence on the movement, share your sports enthusiasm and your lethality
Provide effective background data analysis
Whenever and wherever possible have their own "private practice" and guidance
USENSE can provide an unprecedented perspective to observe your game training performance. Analyze your shot, contrast action and easy sharing, at the same time can always monitor your performance. USENSE will tell you where to do so, and how to improve and achieve.