Quadro Branco

You know when you want to write something quick on the screen to show someone else, or sketch a drawing? Then this is the APP you need, just drag your finger or a contact pen on the screen and draw whatever you want, the APP has pens of different colors and stroke thicknesses, as well as an eraser, a tool to clean the screen and another to share the image made via email or messaging APPs.
Everything very simple, it's not a tool for illustration, it's a tool for quick lines, the biggest advantage is that it's all free and the only detail is a very small ad banner that won't disturb you at all, because of that, you you won't see those annoying ads that keep appearing and disturbing your productivity.