Dianoid Pro Diagram Editor 1.0
the author of this app says:
Diagram editor for Android phones and tablets. Create diagrams, flowcharts, mind-maps and sketches quickly and easily. Free-hand sketching. Export to bitmap to share diagrams with others.
Drag and drop elements - rectangles, diamonds, circles, text blocks to diagram editor area and customize it. Select free-hand tool for freehand sketching.
Ideal tool to develop thoughts and ideas on the go.