WiFi Walkie Talkie Direct is a best app to communicate free on same wi fi network. With this application, you can transmit your voice data to all devices which are on the same network or to any device which you know its IP address. If you are in a dorm, cruise ship, hotel, building or any other facility that charges internet ridiculously then you need this to avoid heaps of charges on SMS and voice calls. This is a broadcast utility when you are in a single Wifi Network, truly amazing. Download this free app now. Features Broadcast Audio on all the devices. Multi Cast Audio on Devices which are registered on particular IP Address you have chosen. Unicast Address which will get audio only for one device. Touch to Talk or Just Tap on Walkie.