Cant play

I got it when it first came out and I liked it but eventually I got bored and deleted it. Recently Ive felt like playing so I re-downloaded it but it crashes within literally 2 seconds of opening it up so I cant play it at all.
(I have an I-phone 5s with iOS 9.2) This isnt that important but in my settings it says its in version 0.59.1 which isnt the version that it says when on the AppStore

Frosterknife about Pokémon GO, v1.29.1