This app is Table Tennis score board. It automatically display score ,games, service side and change court by rule. The following is how to use it. You click a score board , then score is counted up. You click the button in lower end both sides, then score is counted down. Racket mark indicates service side.It automatically change sides every 2 points. You click a racket , you change service side compulsory. The court automatically change every game. The game count is automatically counted up.You click minus-button below game count indicator, the game count is counted down.