First of all, I haven't tested it, it requires ios 6.0. There is an iPad version that costs 4.99. I don't know if this will stay free or not; I don't know itf it's any good. The developer is Japanese, so at least it should be interesting App info is currently processing and/or the app is not yet fully available for sale on the US App Store.
More and more often. I haven't yet tried an upscaled iphone game on my iPad Mini, perhaps it doesn't look as bad because the screen is smaller. Then again, maybe they look worse because the ppi is higher. I'm talking about non-retina ipads, of course. I just dl'ed it to my pc.