Blizzard announced today that it has launched the mobile port of Hearthstone, playable on both iOS and Android mobile phones. The new version of the game features a completely redesigned interface to make it playable on much smaller screens.
As with previous versions, players' card collections will remain tied to their Battle.net account, so you'll be able to share progress between the Windows PC, Mac, tablet and mobile versions of the game.
And this lovely little extra
Blizzard also announced that anyone who finishes one full game of Hearthstone in its mobile iteration will be rewarded with a free classic card pack. Classic card packs are also available for anyone who finishes a game on iPad and Android tablets.
I couldn't find a Apple Store link