iOS5 years experience
Co-authored 2 books - iOS 8 by Tutorials & WatchKit by Tutorials. 3 full tutorials on raywenderlich.com. Dozens of apps in the App Store.
Swift1 year experience
Worked with Swift since the beginning and continue to do so.
Objective-C5 years experience
Most of my career has been Objective-C and I continue to use it to this day