Both programs create drawings from photos, each offers its own unique intelligent algorithm for producing special types of art works: a freehand quick draft sketch, an outline pencil drawing with well-defined strokes, an expressive drawing with tonal shadings and transitions. There are two main approaches: AKVIS Sketch lets you obtain a photo realistic pencil drawing, AKVIS Draw offers a free interpretation of an object.
Compare the results of photo to sketch conversion in these programs:
Obviously, the result will also depend on the effect settings and on an original image. Both programs let you imitate different pencil drawing techniques, but each has its own advantage. You can play with the parameters and choose what variant you like the most.
More examples (click to open in large size):