Tested with four different iPhones on three different wireless networks. Twice we got it working, but only for a couple minutes before the connections dropped. The phones were within feet of the access point and the only devices using the access point. App should also have some debugging/configuration settings to help it find devices correctly. Wasted $8 (four phones)
The developers had good intentions but they got bored and worked on something else. The app has no reset ability, no way to discover new devices, and no help or information within the app. If it were free it wouldn't be worth it but charging $1.99 is criminal.
Finally, a buzzer for the iPhone! This app turns you and your friends' iPhones and iPod touches into game buzzers! Start up one device as the game Host, and add as many iPhones and iPod touches to the mix to have your own trivia party! Each device becomes a buzzer and everyone will see who buzzed in first! Forget spending $20-$220 on expensive buzzer systems, just download the app from the App Store and start your own ad-hoc trivia games wherever you have a wireless network! Version 2.0 allows for multiple choice questions and free response answers to be submitted! Expandable to any number of buzzers. Requires one iPhone or iPod touch per buzzer. NOTE: This application requires at least 3 devices on the same wireless network with the app installed. If multiple devices use the same iTunes account, this is supported and only one purchase is required!