So when you say "zero fee", do you also mean no late fees, no foreign transaction fees?
Yes.
My Credit Card that I use, does not charge either of those. Foreign transactions are done at a set percentage based on the days rates and there are no late fees for late payments (though there's still interest)
There are quite literally thousands if not dozen of thousands of Credit Cards available out there from dozens if not hundreds of different companies.
I work for a bank, we offer something like 10 different cards, that range from all sorts of offerings and points rewards. some free with no fees. some with fees but higher rewards, some with specific rewards (like discounts on gas), or some with just plain cash back rewards.
The only really unique aspect of the Apple credit card is that it's Apple, a tech company tying their physical devices in with the card. Which is really good and cool. But the card's features itself is not unique and is fairly run of the mill credit card.