Killer content for the membership. One-to-one voice chat.

Hey makers,

I've been working on a one-to-one voice chat app "minutes-talk".

Here's a link: https://minutestalk-b31ee.web.app/

Twitter super followers / Patreon / Youtube membership ...
Paid membership programs change the world.  It will be an era that individuals can live on their own.
However, it is difficult to continue to provide things that make supporters happy.

So, as one of the rewards of membership,  I want to create a service to organise one-to-one voice chat for each supporter easily.

How are you feeling?
I'd sure appreciate any feedback, to help me understand what I'm missing.

-Do you know any other similar service?
-Can you imagine who will use this service?
-Do you have any idea how to make this service grow?

Cheers,