We do not currently provide a transmit app as seen in the most updated readme file on the repo
NOTE 2017.10.11 – A transmit app is not currently provided, but is planned. We will remove this message and provide instructions with how to access it when it is available.*
We currently do not have a release date for such an application either.
Mainly, I pointed you in the direction of our Uplink Repo to show you a code base in which you could make your own transmit/streaming application (this doesn’t necessarily have to be with iOS, as OpenNI 2 can be used with Android/Windows devices).