Crypto credit cards function just like normal credit cards. You apply for the card and, if approved, are given a set credit limit and need to pay off whatever you utilize each month. Of course, you’ll also earn crypto rewards when making purchases with the card.
Crypto debit cards, on the other hand, allow you to spend the balance of your crypto holdings, similar to how you would with a normal debit card tied to a bank account with USD. Many crypto debit cards also allow you to earn crypto rewards for these purchases.