I don’t really like Apple, but once in a while they do the right thing. This comes from the App store’s new labels on apps.
Signal just has “Contact info” under the “Data NOT linked to you” category. This is just the phone number + contact discovery.
UPDATE
There’s another post adding telegram here. This is what it looks like:
This is why I favor Matrix, I don’t have to give anybody any info and it would be hard for the government to build a social graph of my contacts if we use VPN’s or Tor to connect.
afaik matrix stores your data, messages (often unencrypted) on the server you signed up on. signal doesn’t store anything