In Brazil on Friday 20th January, I paid BRL 50 to a hotel 4 times using 4 different no-fee MasterCards, including Revolut, as a test to see which cards give the best rate. I then used the card with the best rate to pay the rest of the hotel bill.
The GBP amounts were as follows:
£12.76 Revolut using contactless
£12.77 Santander Zero credit card using Apple Pay
£12.77 Halifax Clarity credit card using Apple Pay
£12.68 Supercard using chip & PIN, recharged to an airmiles-earning Visa card
It is important to note that while Revolut and Supercard used live rates, both Santander and Halifax used MasterCard’s daily rate probably on the following Monday or Tuesday when the transaction was processed.
It is encouraging that Revolut was slightly better than the worst two cards, but unfortunately it was 0.63% more expensive than the cheapest card.