In Android 8, Google added adaptive icons, essentially making all apps use the same shape for their icons. This is widely adopted now and you can often customize the shape. However, if you do not like the concept of adaptive icons and prefer the legacy icons where apps are free to use their own shapes, you are in much worse luck nowadays where seemingly everything only cares about adaptive icons. Most launchers don't even have an option to use non-adaptive icons. Many instead have options to for...
