A free program for Android, by Small Apps Inc.
The Rounded: Corners Curve App lets you create beautiful rounded corners on your phone or tablet by simply selecting the appropriate shapes, colors, and sizes. It is an easy-to-use app that will give you a quick and easy way to change the look of your phone or tablet. It is a simple app with a clean UI, so you won't have to deal with any clutter. You can create as many rounded corners as you want, and you can change the colors, sizes, and shapes to suit your needs. You can even add a background to your rounded corners to make them more attractive.