I'm thinking of doing the iOS developer nano degree at Udacity. Anyone done that? Any advice?

I can't speak on the iOS program they offer, but I have done the front-end curriculum.

It was honestly a lot easier than I expected, although I did learn at least a couple things. The main reason I was in the program was the job assistance, which they actually do come through on. I was offered an internship through AT&T before even finishing the program, which was nice. So if you're looking to use it as your pathway to a decent job, go for it by all means. If you're looking to learn, you can find similar (or better in some cases) courses online for free.

Lastly, from the standpoint of the credential itself, a lot of the interviewers I've had have been pretty intrigued about the nanodegree. They always want to know the ins and outs.

Overall, as far as personal needs, I think it's a solid investment. Good luck to you!

@GEARWasHere thanks! I will take your advice into consideration.