It's Apple only though?
apple runs a masque relay, but anyone can. @obscura is running one for wireguard traffic
Going to read up on it. I wonder how painful/expensive it is to run those relays. Do you know who is running @obscura? Looks super interesting.
They have a footer on the bottom of their page to input your npub to receive messages to keep up with their development. Next to their email sign up. Very cool!