Update: I've finally been able to play it on my iPhone, check out my review.
Update 2: I've written about the various bugs and glitches that I've come across in the game, check it out.
I probably should have believed the app description, since the very first line says...
Well, I thought, surely it will run. Well in a way it does, at least it lets you get as far as creating your Vault, and then crashes every single time. I guess that I'll have to finally upgrade my iPad.