Is Apple sign-in mandatory if we allow another login which is required to use their subscribed service?

In our video app, some users need to use an account provided by a third party (our sister company which provide mobile services like Verizon) because the package is subscribed via the third party company.

We therefore provide more than one login method. In such case, do we need to include Apple sign-in as well?

Thanks!

Hello kysin8. This is covered in the App Review Guidelines, section 4.8 Sign in with Apple.

—Jason.

@Apple, please clarify more specifically. The guidelines are vague and do not explicitly state that if we have a third party sign in we also need to have apple sign in. The implication is that we can have native sign in as long as that native sign in meets requirements. If Apple is required, please state that explicitly. Many developers are being rejected unless they have apple sign in.

Is Apple sign-in mandatory if we allow another login which is required to use their subscribed service?
 
 
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