It’s more than an app

You may be using one nostr app (e.g., Primal, Damus, or Amethyst). I may be using a different app. In fact I use many different apps.

But your NSEC is the key to portability. It lets you move from app to app and still “bring your followers and notes” along.

That’s why nostr is a protocol. It’s more foundational than any one app.