iOS recurring subscription policy for service, not content

Question

Apologies in advance for a policy, rather than a programming question, but given the paucity of information available online I hope I can be forgiven for asking it here.

Answer 1

As I mention in my comment to @Joe Meredith's response, I received a similar rejection. Although I thought that this was due to an unwritten rule, I just noticed that this Hacker News commenter found a written rule that explicitly states that

Apps containing "rental" content or services that expire after a limited time will be rejected