Are there any Nostr apps that don't relay? Not even a zap or a ♥️?
Discussion
That is not what relaying is
I thought relaying is to deliver a message from one client over a relay to another relay or client.
Yes. Most clients just connect to relays. They do not do cross-relay data transfer.
Also check Matrix.
I can't. I'm on vacation and left my laptop at home, to keep myself from working all day.
I'll check it tomorrow evening.