Blackboard is a full version drawing application developed by Chris Roberts for Android devices. It falls under the category of Education & Reference and is a simple blackboard with some advanced options. Users can draw anything they want with different colors and erase any area with an eraser.

One of the most interesting features of Blackboard is that it allows you to replay what you have already drawn. You can pause at any time and it will start from the beginning to the end. The app also allows you to change the pen size, share the drawing with others via other applications, and clear the board with one button. The best part is that Blackboard is completely ad-free, making it a great option for users who want to focus on their artwork without any distractions.

Overall, Blackboard is a simple and user-friendly drawing app that allows users to create and share their artwork with ease. It is perfect for users of all ages who enjoy drawing and want an ad-free experience.