If it's just one app, I agree, it can't be Apple's responsibility to test every single 3rd party app. However, if it's the problem of
every 3rd party app crashing upon launch, that's not an app problem. That's an OS problem.
I had the same problem a few months ago, and I did the whole trick of installing a free app, and it worked fine. However, I am having a repeat of this problem, and this time, I'm stuck with the double whammy of being unable to access the internet and thus, unable to access the app store. (In fact, the way the problem started this time was when I had a problem restarting my iPhone when my internet access suddenly dropped, and I thought restarting it would restore the data signal - which it didn't. 😟 )