Cool, thank you, that makes sense. 

Three more questions if you want to answer
 - can I use my own relay? 
 - how would you compare keychat to SimpleX and Signal? When would you use which?
 - groups support?

I'm going to set it up, play with it and update:

https://juraj.bednar.io/en/blog-en/2022/05/03/encrypted-messengers-comparison/