I have an iphone for work that I'm also allowed to use for personal stuff. I don't use it often, but it has a great camera and is a useful backup for 2FA if I would lose my primary (android) phone.
It also gives me the option to use Apple Pay. Paying with my android doesn't work, my bank's app is shitty. It would be useful to have an alternative for my bank card, so I was considering setting up Apple Pay.
But I wanted to know: what information will apple get if I use Apple Pay? Do they get the payment details of every payment I make? Will they know anything about payments I make with my card?
On their website they state
Apple Pay is also designed to protect your personal information. Apple doesn’t store or have access to the original credit, debit, or prepaid card numbers that you use with Apple Pay. And when you use Apple Pay with credit, debit, or prepaid cards, Apple doesn't retain any transaction information that can be tied back to you. Your transactions stay between you, the merchant or developer, and your bank or card issuer.
That sounds to me as if they collect everything they can and then anonymize it. So like with everything Apple you just have to trust them. If that’s enough for you, go ahead and use ApplePay.