How to still use iOS6 UI in iOS 7?

Question

From the transition guide from apple I know that there is no rounded rect button in iOS 7, but when I see many \"old\" apps that run in iOS 7 are still in iOS 6 style.

Answer 1

You can enforce iOS 6's UI in your app:

[[NSUserDefaults standardUserDefaults] setObject:@(YES) forKey:@"UIUseLegacyUI"]