Simple Blackboard

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 have various brush size and color options.
- You can save your drawing to your device Gallery.
- The device screen never goes off while you are using the app.
The premium purchase removes all ads and enables setting the favorite paint colors, as well as loading photos.