Hi,
I would like to share our app that we built with ionic-v1 , Its called Livewire and its avaiable on the playstore, through the app you can video/audio call another livewire user for free, we have also added group video calling.
We also have a simple widget that can be embedded on to any existing website through which your website visitors can call you, you can answer the calls on either the app or the PWA site.
A big thank you to ionic for making this awesome framework, can’t wait for ionic 4!