ImpressArt uses your touch input to convert any picture (imported from picture library, or taken by camera) to Impressionist painting. This is achieved by movement of the fingers on the screen. Speed and direction of the finger controls the painting style (grains, level of details and paint mixture). So every creation depends on its creator's imaginations and the original digital photo.
Make sure to spend some time creating the picture as this is not a simple digital effect. Slower the finger movement, more details gets generated for the area.