價格：免費
更新日期：2018-06-20
檔案大小：4.8 MB
目前版本：2018.06.07
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：英語
Tired of asking your tennis opponent: "are you really sure?" In/Out has the solution: install an In/Out device in seconds on any court and get line calling challenges like the pros.
This app is the Companion app of the In/Out device.
支援平台：iPhone, iPad