Chromatic Sketch - A Free App to Help Create Natural Looking Gradients.
For designers and really anyone who has to deal with digital art on a daily basis, fixing elements such as colour gradients can be real busy work. Chromatic Sketch isn't a massively expansive app by any means, but it does take some of that busy work off your plate. It's simple and free to use, and quite versatile. But, it does need very specific input to work properly.