https://chriskohlhepp.wordpress.com/qmole-bringing-the-free-world-of-linux-to-an-ipad-near-you/This app will let you run linux on your (jailbroken) iPad. It hasn't been released yet but the developer has told me he is starting up a kickstarter for it.
So, would it be possible to run bitcoin-qt on there?
I guess lots of dependencies will need to be ported over.