App icon design is easily one of the most important aspects of an app. When you've put your app in an app store, the icon represents that app, if it is awfully designed or isn't eye catching then people just won't be interested. Also having a bad looking icon can make the app look unprofessional, so people won't even bother. I know that I won't even bother downloading an app unless it has a good app icon. If you can't hire an epic icon designer, take the minimal route and create a simple but representative app icon. Here are 30 great examples of app icon designs.