There is currently an app available in the iTunes store which is from Exodus International, an anti-gay organization which promotes the fallacious notion that you can cure homosexuality by praying it away. The app, for those of you who have iTunes, can be found here.
There is a fairly well written and reasoned diary about this, recommending that Apple delete the app from the store. It contains links to a petition to remove the app and a little commentary.
I have a lot of respect for this approach, but I suggest something different.