Keeps crashing

I first downloaded this game when it came out over the summer and then deleted it and just recently re-download it about three weeks ago, there was an update last night and now I am unable to play the game due to it crashing within the first one to two seconds of opening the app, I have an iPhone 7 that is running the newest version of iOS. Please fix it!

LCMidloBarista about Pokémon GO, v1.29.1