This is a our demo app, it will save you 30% battery while talking compared to other VoIP apps.
In addition, the app is not running 24/7 in the background. We integrated push notifications with a carrier grade VoIP server. When there is an incoming call or IM the server will send a silent push notification to wake up the app.
Email hey@n-sip.com to get your user name and password.
9Apps 4.9
