Is apprtc free for use? : <p>i am working on android application that use webrtc and i am using appRtcDemo on github <a href="https://github.com/njovy/AppRTCDemo" rel="nofollow noreferrer">AppRTCDemo</a></p>

<p>but this project use appr.tc server and i think it belong to google. 
so my question is it free to use or not and if it is not free is there a way to make my own server and how ? </p>
