Love the way this app work. The best Walky-talky app i ever tested. But it can be improved in the future release. I will suggest you to be able to operate (push the button) via the Headset main Button. By doing this we can use the app without needed to pick the phone from the pocket. Also for the notification, now it just show the notif message on the screen, will be good if it can deliver the voice right the way even if the phone is on lock mode. So the headset user will get the benefits of it.