As of thirty minutes ago, Apple has fixed a serious bug in the App Store. If apps were instantly crashing on launch, try them again.
If they still aren’t working, check for updates and that will sort it out.
It’s not clear how many apps were affected: it wasn’t limited to any one manufacturer.
Late last night I installed OmniFocus on Angela’s iPad – because we have family sharing on she can use my copy – and it wouldn’t launch. Whereas I installed my OmniOutliner for her two and that’s fine.
This is one of those cases where the next time you get chance to look at the problem, it’s already been solved.
So that’s good. But I don’t know, bendgate followed by iOS 8.0.1 and .2, it’s not great.