Ah. Out of curiosity, which figures did they come with? Because double-checking, they don't resemble the ganbaride cards I've seen either.
Edit: Okay, now I've found the real source... they're from the "Kamen Rider AR Carddass" game, which is sold from Carddass, "a name given to Bandai's card vending machines and, thus, a generic term given to the cards sold by these machines." To quote the source I found, "Kamen Rider AR Carddass is similar to Ganbaride, but for any iDevice with a camera and iOS 4.0. This means that older iPod Touches aren’t able to use this app." It's the same place the "Rangers Strike" card game (which these may or may not be a part of, since that line also includes Kamen Rider and Metal Heroes cards) comes from.