I don't believe so but you can always change the search to iPhone apps and download it, the screen for app will be smaller but you can always zoom in (usually bottom right).
I have the app on my iPhone and did have it on my iPad. It didn't sync to the iPad so the balances were always different. I do love it on the iPhone when I'm at WDW.
Thank you so much for the heads up about this app!! We are using gift cards for spending money for my 5 and 7 year old so this will help them (and me!) keep track of spending!