I have updated my iPad 2 to iOS 6 and the apps that crash when i open them on my iPhone 5 don't crash on the iPad. One of the apps that crashes is iBooks and find iPhone so it's not a slow developer problem surely? The other apps that won't stay open are: Shop Style, Genius Scan, OnavoExtend, Journey Pro, Tango,Flipboard, Trip Advisor, Love Film.
It's most odd.
It's most odd.