THIS, please! I'm Spanish, and a lot of my game mates don't speak English. It saddens me that the rulebook is available in Spanish but only the Wave 1 stat cards are (and only in the book). With this app in my language, a lot of people that are interested in the game could play. I think it's difficult, but even if we had to pay extra for the language pack, I think we would do it gladly.
PS: I've already downloaded the app and purchased the cards. Great work!