Buy Android Voice Chat App

I’d like to acquire a complete, production-ready Android voice chat application. My priority is group voice chat, and the build must already include admin controls (e.g., the ability to mute, remove, or otherwise manage participants within a room)... (Budget: $750 - $1500 USD, Jobs: Android, Android App Development, Audio Processing, Flutter, iPhone, Mobile App Development, React Native, XMPP)