Fully self hosting Jami

Being serverless is an amazing thing I found out about Jami. I want to fully host/build my own android and ios apps and I do not want to depend on any of jami services or if possible, other external services as well.

I see in the docs about installing own turn server. This left me thinking that what are other things in addition to a turn server that I would need to launch fully self owned apps.

So is it just that I build the app and put information of my turn server in the app and users who download my app will be able to chat, make audio/video calls and do everything you list or claim this app does?