I'm not super familiar, but if it's on #Android, you could probably use #Amber for event signing and nsec management. I think there's an equivalent for #iOS, but not 100% sure.
How do you access nostr:npub1v5ufyh4lkeslgxxcclg8f0hzazhaw7rsrhvfquxzm2fk64c72hps45n0v5 on your phone if you don't want to expose your nsec by pasting it into the app? #asknostr
I'm not super familiar, but if it's on #Android, you could probably use #Amber for event signing and nsec management. I think there's an equivalent for #iOS, but not 100% sure.
Haven’t found anything for iOS yet