Finger Focus ★★★★☆ ($.99 / App Store) for the iPhone is an image editing app with a very specific function; focus and blur. Blurring out the background or certain elements of a photo or focusing on objects tend to significantly enhance photos. Usually this could only be done with expensive cameras - not mobile phones. Finger Focus makes it exceedingly easy to accomplish great blur and focus effects just by touching / rubbing the wanted parts just like Color Splash. Other features include contrast, brightness and saturation controls.