Is NSAttributedString available before iOS 6?

Question

I have found conflicting information on the availability of NSAttributedString for iOS versions before 6. It is something that would be really useful if it is somewhat back

Answer 1

It has been around since iOS3.2. However the ability to use them within certain UI controls such as UILabel, UIButton, UITextView, etc is only available since iOS6. You can still use them using CoreText for < 6.0.