WalkieTalkie lets you turn your android devices into a walkie-talkie device which can be used within your wireless network environment. Use this to talk to any other android device within your network that has this app installed. No working internet connection required.* Many users have complained that it is confusing to use.I will try to make it more intuitive in the next update. For now,these are the steps to use it: Broadcasting over multiple devices: 1. Download and this application in all the devices that want to communicate.2. Now make sure all these devices are connected to the "same WiFi network". It is very important that all the devices are in the same wifi network. 3. Push and hold the green button to send any voice message. The voice Message can be heard on all the devices.Talking between single device: 1. Click the settings menu and select " Set Mode" 2. Select Single IP. It will ask you IP Address of the target device.3. On the another device select Menu > Ip Address which will give the other device's IP Address. Enter this IP Address. 4. Now you may start talking. Repeat the same steps in the other device.Hope this helps! Thank you!