Free version only has 1 retina setting. Rest are blurry.

I tried this and every setting except the native 2560 X 1600 resolution is blury on my new retina 13” MacBook Pro. The four retina settings in the Apple Display system preferences look far better to me. None of these resolution settings (except the native 2560 X 1600 resolution) is usable to me. They are too blurry.

The new “Pro” version is supposed to offer retina settings but I am leery of spending money until I know they not be blurry also.

Six String about Display Menu