Poentkonzolo helps you to referee a volleyball match.

With RF Pelilo (https://play.google.com/store/apps/details?id=fr.gaellalire.rf_pelilo) and a RF device (Flipper Zero or HackRF) you will be able to display the score on a Grunenwald scoreboard.

Scoreboard icons created by Rahul Kaklotar - Flaticon (https://www.flaticon.com/free-icons/scoreboard)
Change icons created by Freepik - Flaticon (https://www.flaticon.com/free-icons/change)
Hands and gestures icons created by afif fudin - Flaticon (https://www.flaticon.com/free-icons/hands-and-gestures)
Turn back icons created by Gajah Mada - Flaticon (https://www.flaticon.com/free-icons/turn-back)