This is the follow up to this post post
Tinder walkaround requires alot of extra work -> sending confirmation e-mail & handling that and all the cases.
Apple should realy make that optional! As an example for my application option to sign in anonymously is not "best user experience" as a user is added to the "group" trough email and if by missatke he/she login with annonymus account and try to sign out to try sign in with normal account the option of choosing "normal" email will not be longer available. Then they need to go trough iphone settings and clear that (which no one acctuelly knows abbout)! There are some fixes where one can "revokeTokenWithAuthorizationCode" when signing out but those are just "fixes" that makes everything ugly.
So dear apple the logic that this is for the "best user experience" does not hold for every application so that should be reconcidered, please!
