• Apple rejects Hey calendar app for not allowing non-paying users to do anything within the app.
• Hey had previously faced a similar rejection from Apple for its original iOS app four years ago.
• Hey plans to fight Apple’s decision, but the specific approach is not yet known.
Every single one of those apps supports in app payments/subscriptions. You can subscribe directly from the app.
So, no, you don’t.
And if Hey added that, they would be fine.
This is the reason Apple didn’t lose their antitrust cases - they apply their rules pretty uniformly unlike Google which made all sorts of exceptions and side deals.