The app icon, also known as the launcher icon, is a graphic image that represents the applications on the device. The app icon is used to launch the applications and appear on the device home screen where all the apps are listed. It’s the first look that prospective users will get of your app on the Google play store and iTunes store.
App icon recommended resolution is 1024 x 1024, which will work on all the Android and iPhone devices.
App icon presented on the Home screen, which shows the app icon image along with app name with other apps installed on the devices.
o Communicate well, even at small size
o Work well with a wide variety of backgrounds
o Icons should not present a cropped view of a larger image
o Have similar weights to other icons to attract user's attention