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Tennis Serve Speed


4.6 ( 9776 ratings )
スポーツ ヘルスケア/フィットネス
開発者 Infused Media
無料

> Measure the speed of a friend, pupil or opponents serve
> Simply tap once when your opponent hits the ball and again when it lands
> Then move the character and ball to match the positions in real life
> Press calculate speed, and then you find out how hard the ball was hit!