Puntos a favor: Used it on my Samsung s8, so it is working flawless on android, it was fun experience and it looked cool to share with your friends a new and innovative business cards. Cards of future!
Puntos en contra: Not sure how it works on iOS and older phones. Big con is that you need to have an app installed, to use it fully.
Innovating and fun experience. Great way to impress and giveaway an awesome business cards.