Someone asked me about de-centralized social media iOS app Damus, which uses the Nostr protocol -- and has been promoted heavily by Twitter Co-Founder Jack Dorsey.
Things I like:
1. Looks simple
2. Neat UI/UX
3. Easy to get up and running
Things I don't like:
1. The private key / public key is difficult to use
2. Interoperability with different clients is not fun
3. More crypto bullshit
I've tried other Nostr clients. It's pretty much the same thing.