Hey so the app is called Damus or Nostr? I am new here this minute looking forward to what this site is all about.
#introductions
Discussion
Nostr is the underlying protocol. That protocol can be accessed by a variety of apps. For ios most people use damus. On android most people use amythest.
It's like how the "internet" is an underlying protocol (tcp/ip) but it can be accessed via a browser like chrome or safari.