small UI behaviorm Viddy privacy settings

Hi, I need a simple UI behavior to be done, in the viddy iphone app before the user can publish a video he gets to a screen where he has to make a privacy setting, the UI behavior is by sliding between three options he has, I am attaching 3 screen shots that show the three options ( look at the bottom right corner of every screen). I just need a project to do that small behavior( a small app that can do the same behavior between the three settings by sliding). Before bidding make sure you download the app called viddy and see it in action, Since this is a small project I will grant it to the lowest price available.