Tablets are a terrific form factor for digital tabletop games. However, delivering Kickstarter rewards to mobile platforms continues to be difficult. While you may have seen other companies successfully deliver mobile apps, the truth remains that there is no officially sanctioned way to deliver on iOS, and an only marginally better way to do so on Google Play. We have been in touch with Apple directly in the past and were told in no uncertain terms that a) there is no supported solution and b) any company that tries to find a work around is doing so at their own risk. We are not willing to take that risk with your money.
Update (Nov 14): We have now committed to launch a mobile version of the game on iPad and Android tablets within 1 month of the Steam 1.0 launch. The new Mobile Dungeon backer level is $1 and officially registers your desire to see One Deck Dungeon come to mobile. Furthermore, each mobile backer brings the release of the mobile version 1 hour earlier, so it could potentially launch at the same time as Steam. Check out Update #6 for more details:
We hope for One Deck Dungeon to live for years, on multiple platforms and this campaign is just the beginning.