First off, restarting did not help, and it was doing this before I updated to iOS 11.0.1.
Whenever I try to to open up settings, MCPE crashes. Same goes for trying to load a world. I can load the MC Store, achievements, skin selection, and get to my list of worlds, friends and servers. Cannot load the featured servers (as in trying to play on them) without the game crashing. Help is always appreciated.
Hopefully the next update will solve this.