The app works, although it takes 24 hours for funds to be add. I wish it was more instant, it does keep a current balance. I would love to see the full metro map instead of just the nearest stations, to avoid having to use to different apps. Overall, it does what it says it will do, I havent found anything else out there to keep track of my metro spending (I dont take the metro often).
its2good2betru about Smart Metro