Since the release of iOS 8, Apple has implenented many more reasons to reject your app application. In this post, we’ll go over the reason termed “user registration”.
Article 17.5 of Apple’s App Store Review Guidelines provides grounds for rejection that have existed for some time. The article reads as follows:
As a second and last step, you’ll be asked to customize this service and imput the type of data that your application collects.
If you have a login system in place that uses Facebook or Twitter you can dislcose so with our built in extensions as well.
If you use Twitter or other auth (=OAuth) services for user management, then add the respective service while keeping the “Direct registration” in place.