You don't even need to register online. You just need a Procore subscription.
Install all from your Android device
Login to app with your Procore credentials
Invite colleagues to try PTT for Procore
In the app you’ll find your Procore Meetings, Punch List Items, and
other groups, as well as your Procore Directory. You’ll be able to
notify any such group or individual about PTT for Procore via the app.
Or you can simply invite colleagues using Procore via email. Here’s a
little info and the link to the app:
VoiceLayer, in the Procore app marketplace, has an app for
communication via push-to-talk. You can login with Procore credentials
and then create push-to-talk channels from any Procore grouping, such
as a Procore Meeting or Punch List, or with any individual in the
Procore directory. The Android app is at:
3-month free trial
For up to 250 users. Requires Procore Subscription. No billing info required