A good photo editor — correct thing on your smartphone. HDR FX Photo Editor in the first place, sharpened by the creation of HDR pictures and has many settings to get the best effect. But this application can not be considered niche, because it includes a lot of features such as image cropping, rotation, leveling the horizon, framework, adjustment of brightness, contrast and sharpness. There is also this “advanced" feature, the adjustment of color channels. However, if you do not want to take his head, simply choose from one of the mass of filters.