Don't you have difficulty in drawing graphics freehand? You can draw circle, triangle, square, pentagon, and hexagon easily;) [How to use] 1. Hold a pen in one hand. 2. Launch this application, and hold device in the other hand. 3. Capture the pen tip using the camera in device. 4. Draw along graphics in device monitor. *If you want to change the size of graphics, you can zoom pen tip by using slider in lower right.