WiFi Walkie Talkie is a PTT (Push-to-Talk) application to make free phone calls using the same wifi network connection. if you are searching some free phone call applications to talk with friends and families then don't use phone calling applications. Just use this free wifi walkie talkie app to communicate. which allows you to talk for free over wireless networks
To make a free walkie Talkie call you need to know the IP Address of that device to which you need to transmit your voice data.
Making a free phone call
If you want to send voice message to a single user, press the Unicast button and insert the IP address that you want to talk with.
Press PTT Button, hold and speak.
If you want to talk Broadcast, use the Broadcast button and broadcast domain IP address.