I use it every day. Literally.

This app is so incredible, yet so simple and easy to use. It gives you amazing control over the contrast and allows you to create vignettes or hotspots, burn out a sky to give it a deeper look, and add a sepia tone or really any color youd like. This app can take a landscape photo taken with an iPhone and make it look like an Ansel Adams photograph. I could not praise this app enough. If you love black and white photography, its worth every penny.

jhfrank87 about Noir Photo