Birch

Birch is a free app that helps people optimize and manage their credit card rewards. We do this by automatically categorizing a user's spending and comparing it to the thousands of merchants, categories and bonuses that earn rewards from hundreds of credit cards.

When you're ready for a new card, Birch compares your spending history to hundreds of cards to calculate potential rewards had you used one of the cards for the same purchases. It's truly a risk free, no strings attached way of finding the right card.