On Tuesday, Hearthstone finally made its way to the iPhone via the iTunes App Store. The game does require an iPhone 4S, iPod touch 5th generation, iPad 2 or better. Although personally, I feel the game is best played on a PC/Mac, iPad, or one of the new iPhones with the larger screens.
All of your gold, cards, magic dusts and such will transfer to your iPhone using an existing Battle.net account. Hearthstone: Heroes of Warcraft can now be downloaded on iPhone for free.