Credit Card Max

What it does

Tracks the cards you hold, flags the benefits you are paying for and never using, and catches recurring charges sitting on the wrong card. It runs when you ask it to, rather than on a timer. It works from the cards you actually hold, so the answer is which of yours to use rather than which card to go and apply for.

Before you install

Open the share link and read the instructions it carries before you add it. @trevin shared this one publicly, and adding it copies the setup into your own account rather than giving you access to theirs.