They may display all the app icons in a square shape, rounded square, or squircle (between a square and circle), for example. For example, different manufacturers may display app icons in a different shape than the circular icon shape shown above. Sometimes device manufacturers create a custom launcher experience that's signature to their brand.
If you've used different Android devices, you may have noticed that the launcher experience may look different, depending on the device manufacturer. Launcher refers to the experience when you hit the Home button on an Android device to view and organize your apps, add widgets and shortcuts, and more. You may also hear an app icon referred to as a launcher icon. The app icon appears in a number of places, including the Home screen, the All Apps screen, and the Settings app. An app icon is an important way to differentiate your app by adding a distinct style and appearance.
