Simple SDK demonstrates how to add icons to your iPhone applications using XCode. Find your desired app and right click on it to designate that you want to open it with Gimp. Use the rectangle tool to crop the image to a square size. Add text to the image as desired. Then, scale the image to 57 x 57. Then, save the file as an icon.png in the same application folder. Exit out of Gimp. Next, go back to XCode. Open the icon file in the info list. Type in the icon title in the correct field and drag it into the XCode project. Now, when you run the application, you will see the icon.