Really simple to set up and works great! – Trivia Bowl Buzzer Review

We used this app to create buzzers for a game at a staff retreat. There are no setup instructions, which was the only downside, but it was so easy it didn't matter. Designate all devices as peripheral except one, make sure all devices have Bluetooth turned on, and as soon a you set one device as central, you'll be able to see the other devices in the area.
Review by Kischa333 on Trivia Bowl Buzzer.