I frequently use the iOS app on both an iPhone 5s and 6 plus, and find it convenient.
But there is one question that keeps crashing the app: Does Newton's third law apply to momentum or to forces?
Every time somebody comments and I want to see what happens, I find that the app quits. There must be some incompatibility - maybe the Q&A is too long, maybe there is some crazy markdown, maybe it's because there's a bonus attached...
I wonder if others find the same problem with this question. Initially it was OK but in the last couple of days not.