2025-06-10 00:00:00 This app allows you to draw on a simple blackboard (or whiteboard). You can use it for drawing, jotting down, illustrations, math calculations and etc. The key features are: - You can choose blackboard or whiteboard. - You have various brush sizes and huge number of paint colors. - You can draw various shapes such as line, arrow, circle, oval, square, rectangle, triangle, and polygon. - You can type text with adjustable font size.