Dark Sketch app for iPhone and iPad

Dark Sketch takes your photos and turns them into unique art. Snap new pics or load an image from your photo library. The effect looks best on in-focus images with lots of small details like pictures of landscapes or furry animals. You can make amazing portraits of cats. Once processed, you can tap the screen to switch between the original photo and the sketching. Adjust brightness with the bottom slide control and color fill with the right slide control. The switch turns contrast enhancement on and off. Save images to your photo library by tapping the action button on the right.

This app uses a free icon from www.glyphish.com