iphone voice changer app

I need a voice changer application for iphone. Here are the basic features needed: 1- User will record his/her own voice 2- Recorded voice will be played back using different pitches. 3- There will be icons with different characters. (Darth Vader, Gollum, Girly, Robot, Whisper, Kiddo etc.) When the user taps on the icon manipulated wav will be played back in loudspeakers. I will provide you more details when we start the project. 1. I will own the copyright and code and our relationship will be confidential. 2. The app will conform to Apple standards of both coding and usability. I prefer experienced developers that are constantly available and online with IMs at least a few hours every day. I prefer daily updates even if nothing was done. I will choose the lowest bid with most experience. The application should be able to make "realtime" voice changing as well. -- Please give me your suggestions/comments/thoughts asap..