[Solved] How can I check if a subscription is active?

I am trying to check if a subscription is active. I do not care if they cheat.

The following snippet appears to work for Android:

var products = storeController.products.all;
bool subscribed = products.Where(p => p.hasReceipt).Count() > 0;

(although I do not know if this takes the expiration date into account. Do receipts come through even after they expire?)

But I cannot figure out how to do it for iOS. I have spent a couple days researching, but without success.

I have several subscription lengths available, but they all do the same thing. So I do not care what product they have purchased - only that they have purchased one, and it is not expired.

I was really looking for some copy and paste code, but I have not yet been able to find it. I will take any guidance I can get here. Thanks!