That’s a pretty sweeping claim, I don’t know that I’d go that far, but this is an interesting piece of software nevertheless…
What it does (and, yes, it will play havoc with any colour management you’re using, so be warned!) is it makes your monitor have a higher colour temperature during the day (when the sun is out and the light is quite blue) and makes the display have a lower colour temperature at night (when you’re using artificial light)
The idea is that the picture on your display will more closely match ambient conditions – if you activate the software and immediately set it to night mode, the picture will look very yellow however after a couple of minutes it will begin to look a lot more normal and if you disable it, you’ll be surprised at how blue it actually is.
It does have a quick and easy way to disable it for a period of time if you are doing any colour-sensitive work, like retouching photos or anything like that.