Needs more

I liked the freehand sketching on graph paper, but wish you could make it draw straight lines, circles, arcs, etc. I only have the free version, but see nothing that tells me what features I would get if I upgraded. I wish apps would come with an instruction sheet explaining the different buttons. It took me hours to find the graph paper background. The line width is too fat. I would to be able to choose my line width. The ad banner is highly annoying, large, and in the way. I have never purchased anything from seeing it in an annoying ad banner.

Mbr 2005 about Sketch Pad 3, v3.8.15