ReachUAll

Reach All Push To Talk (PTT) application is a free call and message app from Mobile Tornado, available for iOS. It allows individuals or a group of users to communicate together via Push to Talk and messages. It uses your phone’s Internet connection (Mobile data or Wi-fi) for calling and messaging individuals or a group of users.
Why use Reach All:
Easy to Use: Reach All application is an easy to use app as you can initiate a call at the push of the Start button.
Free of Cost: Reach All is free. It does not need any fee for usage. It uses your phone’s Internet connection for call and message.
Free Calls: Call your friends, colleagues or family with Reach All calling irrespective of your geographical locations. Reach All uses your phone’s Internet connection to call instead of your cellular network’s voice minutes.
Always Signed-In: Ones registered to the application; you remain always signed-in. So, there is no chance to miss any of the messages. Also, you don’t have to worry whether you are signed-in or signed-out.