Yeah, I know HSTracker, but it's incompatible with OS X 10.9.5. I tried to update my old MacBook Pro (2011), but the app store doesn't show me any system updates (the last was Mavericks). Someone knows a deck tracker compatible with OS X 10.9.5, please?
I believe that it is a competitive edge, not just something that is cool: It's like counting cards in Vegas. To be able to know what is in your deck, what you have played and your chances of topdecking a win condition are key to a lot of games. Your other options are to either have an impeccable memory or to write down each move that is played on pen and paper like some do during tournaments. Maybe they are frowned upon, but definitely are more than an aesthetic add-on.