Not really. We plan to eventually add login with nsec bunker to mutiny but there's very little adoption as of now
SN would adopt it fwiw. Any browser client should too though.
Is SN a nostr app?
SN allows crossposting. We have a PR that be merged soon that crossposts most post types via @bitcoinplebdev More will follow, but we are reliant on extensions exclusively right now which aren't available everywhere and can be painful to use in some cases.
Make SN nostr app interoperable with the other nostr communities apps for winning https://github.com/nostrability/nostrability/issues/3