The app simulates real decks of cards that you can swipe through and count, then check your count for accuracy. Last week, I posted a brief story about an app I made called Card Counting Companion. There is now a table in the box, which charts the name of the system, its running count, and its true count (equal to true count divided by number of decks remaining). Edit: as suggested below, multiple different counting systems are now accounted for in the Count Dialog Box.