April 24th, 2020
You can now link and sign in with an Apple account on D&D Beyond.
For existing D&D Beyond users, ensure you are signed in with your Google or Twitch username (as usual), navigate to the Account page (dndbeyond.com/account), and click the Apple button to choose one of your accounts to link.
All newly-created accounts going forward will be through either Apple or Google as well. If you create a new account with Apple and wish to link a Google/Twitch account, you can also do that through the Account page. This would be important if you want to use the D&D Beyond Twitch Extension.
...Well, I have neither a Mac nor an iOS device, so I guess I can't use sign-in with Apple. That's their fault, though, not yours.
You can also activate the two-factor authentication with an iPad (iPadOS) wich works the same as for iOS,
but apple just send me back to "https://www.dndbeyond.com/oauth-apple-callback" ... so something is not working
...I thought an iPad was an iOS device. (Just as Android tablets are also Android devices.) Apparently that changed as of September 2019, as iPadOS was forked off as a variant of iOS for iPads: https://en.wikipedia.org/wiki/IPadOS
Thank you! I've been waiting for this.
I see no option to login to the iOS application with my AppleID, only Google and Twitch. I’m able to login to the DnD Beyond website and iPadOS application with my AppleID just fine.
The iOS (iPhone) application is missing the AppleID login option.
That does me no good; I created my DnD Beyond account with my AppleID.