Fiverr is gradually rolling Sign in with Apple for it’s Apple device users. This feature is way better than passwords. And I am super excited about it.
Apps are converting existing accounts to Sign In With Apple if your Apple ID email and app account email are the same. You do lose out on the hidden email feature though.
It’s been a big week for Sign In With Apple. Apps like Medium, IFTTT, NYTimes, Strava, Ritual, Freshii, Fiverr and dozens more now offering the privacy of Apple’s anonymous sign in method. I was able to drop Facebook logins entirely. No more tracking me Zuckerberg!
Sign in with Apple integrates with iCloud Keychain so if you already have an account with the app, the app will alert you to this and ask if you want to log in with your existing email instead. The app will check for this by domain (e.g. Fiverr), not by trying to match the email address associated with your Apple ID — which could be different from the email used to sign up for the account. (Source)
I will be definitely going to use this feature soon.