The freelance market for iOS/OS X is still hot. I recommend subcontracting through established design firms, so you don't waste time dealing with client management issues.

You don't need education (most won't even ask), but you need examples of your experience and skills. Create a beautiful app that doesn't crash and you'll be ahead of the game. Use an API that people have heard of (Instagram, Flickr, etc.). Create a few apps and you'll be seen as an established developer.

Most importantly, deliver your first projects on schedule and they'll likely hire you for many projects down the road.