I have a SaaS system that is a web app. I also have a simplified lightweight version that is a mobile app. Users must have a main account on the web app before they can use the mobile app. That being said I'd like to offer the iOS app in the Apple store but I do not want to pay Apple 30% of my subscription fees since most traffic will be coming from my website anyway.
I understand that I cannot link to my website inside the iOS app and tell users to "Buy Now" in order to use the IOS app. I'm wondering how exactly I should handle it in order to:
Get my app approved and into the store and allow people who install the app know that they need to go to my website to register in order to use the app. Do I just put a login screen on the app and then text below it that says "An account is required to use the app. Visit our website to register”
Alternatively, can I put an actual link there as long as it's not to a shopping cart page? Such as "An account is required to use the app. Visit www.example.com to register.”
I'd love to hear from those experience with getting apps published bot circumventing the 30% payments to Apple.