A free app for Android, by Art DS Apps.

Whiteboard Drawing & Sketch is an Android app that allows you to use your finger to write, draw, or paint on a digital whiteboard. It has a straightforward interface that is simple to use. You can use this app to quickly sketch your creative ideas. If you make a mistake, simply remove it and clear the board with a single click. All of your drawings can be saved and viewed in the app’s My Drawing section. Choose a color to make a beautiful drawing on the simple and easy Whiteboard. When you’re finished with your masterpiece, you can share it with your friends on social media.