NightShift - for your eyes only Macintoys NightShift

NightShift - for your eyes only

NightShift adjusts the RGB mapping tables in your graphics hardware to reduce eye strain when working in low-light situations. Other benefits include not annoying drivers when working in a car at night and being able to change the color of the display to minimize desensibilization in astronomy.

NightShift has an inverse video mode and smooth fading between modes.

Download Version 1.4:   Binary DMG (120k)  |  Source DMG (113k)


This is free software - as in freedom.
Source included. Licensing information below.
Feedback is welcome.

If you find extraordinary value in this program, please consider donating some time or money to an environmental group of your choice.


This program was written because I enjoyed Dark Adapted X by Stephen E. Hutson so much that I couldn't stand one missing feature (that Stephen could not add because of a real basic library limitation): Inverse Video.

I suggest you take a look at Stephens program too, it has some different features and is also available in a Windows version.

The icon was made with The Gimp.

Yes, I know about the Universal Access features, but they don't do smooth fading and I was in a tinkerish mood anyway.

Known problems

Current settings sometimes get lost after SleepMode, I am still trying to understand when.

NightShift does not play well with programs that do their own DisplayTransfer manipulation / capturing (i.e. iPhoto). After an iPhoto SlideShow, settings are returned to the system defaults without NightShift noticing.

License Legalese

NightShift is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version.

NightShift is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.

All trademarks belong to their respective owners.

Read the GNU General Public License

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