Love this Pencil Sketch second version! Has some extras built in, such as filters, bokeh, sketch freehand, and lighten/darken. Most sketches are good quality and professional, plus you can change settings on many of them, such as thicker lines, etc. There is lots of competition for photo sketch apps, but Pencil Sketch2 is at the top. Highly recommend!
BAR112 about Pencil Sketch 2 -Draft Effects