Luminance is a slick photo editor and photo filter app from Subsplash. Choose from 19 photo filters (many of which are so gorgeous that you'll likely be happy with the preset options) and then go on to fine tune the overall look of your photo. Almost everything you might need is present. There are controls for adjusting the tone of the image, the strength of the vignette and of course the final crop.

Though Luminance doesn't offer anything completely new, it has the basics truly nailed. Also, did we mentioned that it's currently free?

App Store Link: Luminance.