worlds most popular app shouldnt crash

Crashes when i open it, crashes when i raid, crashes when i evolve mon, crashes when i catch mon, crashes when i look cross-eyed at it.
Ive spent a couple hundred $$$ on this app and im getting frustrated about its performance.
CMON NIANTIC... get your act together!
iPhone6 - iOS10.3.3

Hamm42 about Pokémon GO, v1.39.1