Comicbooth- Vol 3 Halftone can portrait halftone image through your iPhone and iPod Touch. It will look like an artist's brushed up halftone portrait. You may adjust line width and tone before taking snaps. You can share your snapped halftone pictures with your friends and family direct from this apps via email. Moreover, you can update your facebook or twitter accounts with those snaps from this apps. It's good to have some artistic halftone pictures without any creativity and hassle.
I apprreciate Cobbysoft for making this Comicbooth - Vol 3 Halftone apps. Here are some halftone pics for reference.
You may try this from here http://itunes.apple.com/us/app/comic...432329146?mt=8