I like to build decks frequently just for the hell of it. I’ve tried other apps, but this one always felt the best to me. It especially is good because it uses the pictures for each card when going down a list, making it easier and faster to identify the cards. It’s always up to date in everything that comes out in America. Though one big problem is that there are cards coming out in Japan that are in other apps but not this one. Eventually it comes out, but it takes months to come out in comparison to other deck building apps. The formatting for this app though is fabulous. It keeps up on errattas, banlists, and if there’s an error, it fixes it almost immediately. The app is great, I can see the photos of cards. The only down side is certain cards don’t have an aligned photo, for example “The Legendary Exodia Incarnate” but I can still see the card, so it’s not a problem. Besides that this is the best deck building app I’ve had.