Bluetooth Chat (test.bluetooth.gga.com.bluetoothtest) on Google Play
This is a TEST chat app for Android that uses the Bluetooth as communication medium.1 device needs to be the server and up to 10 other devices can be the clients.This means that up to 11 devices (phones) can communicate in a conference in real time between them.The source code for this app can be found here: https://github.com/HoriaGoran/Bluetooth-Chat