Non-renewing IAP registration form: Is it allowed to ask for personal information?

Question

My app features a non-renewing subscription (In-App Purchase). Registration is optional but recommended. Currently I ask for an email address and a password. Apple gave its ok to that.

Has anybody experience in whether it's allowed to ask for more than that? E.g. first/last name, company, phone number (may even be optional)?

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Edit: I've updated my app to ask for additional registration data, but only the company, an email address and a password are mandatory. I don't know whether the reviewer overlooked this change in the app or if it's ok to do so, but it passed the review.

Answer 1

my previous app was approved but they rejected 2nd app which is following same login and registration process. Here is the 1st reaction I got from them:

17.2

We found that your app requires customers to register with personal information to access non-account-based features, which is not in compliance with the App Store Review Guidelines.

Although guideline 11.6 of the App Store Review Guidelines requires an application to make subscription content available to all the iOS devices owned by a single user, it is not appropriate to force user registration to meet this requirement; such user registration must be made optional.

It would be appropriate to make it clear to the user that registering will enable them to access the content from any of their iOS devices, and to provide them a way to register at any time, if they wish to later extend access to additional iOS devices.

Again i opted for a clarification on the rejection with my comment that previous app was approved, then they replied this:

Reasons

17.2: Apps that require users to share personal information, such as email address and date of birth, in order to function will be rejected

Thank you for your message. Users must have an option to purchase subscriptions without being forced to register and log in.

On occasion, there may be apps on the App Store that don't appear to be in compliance with the App Store Review Guidelines - they may have been approved before the current Guidelines were available or for other reasons. We work hard to ensure that the apps on the App Store are in compliance and we try to identify any apps currently on the App Store that may not be. It takes time to identify these occurrences but another app being out of compliance is not a reason for your app to be.

It would be appropriate to revise your other app so that it would also be in compliance with the Guidelines. We look forward to reviewing your revised apps.

Now I am trying to connect with them on phone, let's see what happens. But it is really weird. :(