Hi,
You are in a very good position to win the contest!
We will use two of your logos.
First, we will use one logo for the iphone-splashscreen (the screen that shows when you start the application). Here we will probably use
#48 or #139.
Second, we need an application icon that should be 57x57 pixels. Note here that the original should NOT have rounded corners or lightning/shade effect. This is automatically done by Apple in the App Store. Here we are interested in #137. Can you do a copy of #137 but use the green as background color and the logo in white? The background should not be rounded, just use a square. Thanks.