Is it cheaper to create website or iphone app?

I wanted to know if it was cheaper to create a iphone app or a website. The site will be a shopping site that will hold over 130+ stores products. And have other perks such as auctions, contests, and things.

Website is cheaper than the iphone apps

One that says "hello world"? Both about 25 cents.

You can create websites more easily and with less investment.