I suppose I’ve never really used keychain because of my Windows legacy of Firefox and later Chrome. I do like that it remembers lots of my passwords now on iOS, but I’m still mostly in Chrome on the desktop (the iPhone being only casual browsing at best). 1Password bring 1 click login and management of 2FA to all the platforms.
My wife and I have long shared a common account, synced via dropbox, which means we both have access to all the things across all our devices. I’ve also got software licences, mail account details and other things stored in there.
It also highlights any services you have that were hit by things like Heartbleed or Watchtower that I haven’t yet changed the password for.
I was hesitant for a long while, but since giving away my soul I don’t know how I would go back! It’s so handy to go to some site and hit the login button only to find an account I signed up for 8 years ago that I signed up for!
While I have LOTS of old accounts with password are very short and insecure, all new ones are created using the password generator to make things I can barely type in let alone remember… but 1Password handles it all for me. Nice and unique and secure. Even for piddly little things I would have used the same generic password for once upon a time.
Now I’m sort of aware that keychain does lots of these things, but this is independent, cross platform and application. It just works for me.