Neil Hughes:

Cards is a free application available on the App Store, and it works as promised. I tried building a card with the software while on the go, over a 3G connection on an iPhone 4. The process is simple and easy — and at a cost of just $2.99 with shipping in the U.S. ($4.99 to anywhere in the world), the price is right, too.

Best review I’ve seen on Apple’s new Cards app.