價格：免費
檔案大小：7.5 MB
版本需求：需要 iOS 9.0 或以上版本。與 iPhone、iPad 及 iPod touch 相容。
支援語言：日語, 英語
Please use it for lessons at the tennis school.
[Main function]
・Placement of students, coaches, mini nets, and color cones.
・Display the number of balls(or players) change with.
・Display the direction of rotation .
・ Red, blue, green, three color marking.
・ Decision of student's order.
支援平台：iPhone, iPad