This tool app tests your connection speed with another specific player/participant (group) - via Google Play Games (GPG) real-time multiplayer game service.
It was hard to manage with multi-language.
It was really hard to manage with real-time multiplayer.
Google Play: https://play.google.com/store/apps/details?id=com.spring.gpg.realtime.multiplayer.speed.test
(Please inform me, if you want to help with translations)
