Why I built this
I love travelling for as cheap as possible. Credit card rewards offer travel benefits redeemable from regular spending. I figured I could travel full time (for cheap) by timing credit card sign-on bonuses and optimizing my spending. I got so many rewards that I decided to travel for nine months through Southeast Asia and Australia, where I got 36 hotel nights and 5 flights for free.
The system isn't complicated, it is just tedious. Every purchase is a small decision, and getting it wrong costs you a little at a time. The Card Caddie does one thing: it tells you what card to use anytime you pay, so you can travel like me: for free.

