Template apps for iPhone

Is there a good place to get starter apps for iPhone, where you choose from any of a large set of permutations?...for instance with a nav bar and a flip screen and a 3 deep table view, with Core Data support etc. I guess what I was hoping for is some kind of wizard where you can check a few boxes and开发者_Go百科 have a working app as a starting point....but more than just the 3 or 4 choices that come with xCode. If not a wizard, just a nice set of a couple dozen permutations.

Also....is there any good sample apps out there that show the difference between identical apps, one which uses Interface Builder and one not?

Aside from being handy for myself, I'd think these would be great as a teaching tool. I've googled a bit and come up with nothing.

http://www.appsamuck.com/ may not be all you want but is a good place for you to start.

http://developer.apple.com : each part of the SDK has numerous examples, although the focus is on the parts of the SKD they represent, you will find pretty good overall coverage.