Curve is an app that gives you a prepaid Mastercard that you can load on demand, and it just added support for Apple Pay.
Apple Pay Curve
You can link any payment card you have to the Curve app, then use the Curve card to spend from one of those cards. It’s kind of a workaround that lets you use any of your cards with Apple Pay.
You can add your Curve card to Apple Pay on your iPhone directly through the Curve app. To do that, go to the ‘Card’ tab of your Curve app and click the ‘Add to Apple Wallet’ button below your Curve card.
Tapping the button will prompt you to enter your full name and Curve card details in the Apple Pay wallet. Once you’ve confirmed your details and accepted the T&Cs, the registration of your card on Apple Pay should be complete!
That’s not really how Curve works, and you cover it better in the next paragraph.
Curve let’s you route a card transaction to one of your other cards, to a default card, changing it before a transaction or by changing it afterwards (they refund and recharge, in that case). In effect they act like PayPal does, but give you a card to use at a retailer just like any other card.
How is it useful? Perhaps you have multiple cards which you use for different things: household, business, personal. Or maybe you need to put transactions on different cards for cash flow reasons.
Anyway, you can carry just the Curve card but put the charges to the right account. And now, with Apple Pay you don’t even need to carry the single card.
They also have very competitive rates for foreign currency transactions, so good for using when travelling abroad too.
(Disclosure: I’m a Long time user, since their early days. Not an investor.)