I really enjoy building decks before I have the actual cards; it gives me a way to plan out strategies. (This is great especially when new to the game.) So without any more introduction I'll list of reasons I like/dislike this Hearthstone Deck Builder.
PROS:
-Basic decks are included,(these help the user see what pre-existing cards there are and can help the player build a basic deck/learn about the heroes play style).
-Deckbuilder is very easy to use/build a deck, I especially liked how it alerted me when I went over 30 cards.
-I also appreciate the want card/have card system; it really helps you calculate the cost of a deck. (Ie. You know what you have already,)
-Always a plus,Deckbuilder is very stable on IOS 8, on a 5s.
CONS:
-I wish there was a search function to find specific cards; since I'm relatively new to Hearthstone I don't know all the mana costs of the cards.
-I wish for a way to see how much a constructed deck would cost to craft in arcane dust.
-Maybe see other people's/professional player's created decks? This could be used as a learning tool.
That's it, if your at all interested in hearthstone, this is a great tool for learning all the cards that you don't have yet. I would defiantly recommend Deckbuilder in its current state, and it'll be even better if the author could include some of my ideas from the cons section.