Garbage app

Right as I load it up it instantly freezes. I have uninstalled it and reinstalled it but nothing works. I have an iPhone 5(not 5s just 5) and if somebody knows what to do, thatd be great.
P.S I have played this game on my computer an its great, so download it to try, but might not work.

Legoreptile about LEGO® Hero Factory Brain Attack