Overall, shifting the color temperature on a device of any screen size might not be enough. The bigger the screen size, the more intense the light being emitted, hence the higher chance that you won’t get a good night’s rest. The impact on you: Night Shift on macOS might be more helpful than in iOS simply because, according to sleep experts, a device’s screen size and light intensity does play a factor in lack of melatonin production. Disruption of sleep is not just melatonin suppression it’s what you’re doing to your brain to keep it alert. “The big problem is that there’s no solid evidence that mobile screens’ color temperature is the real culprit, nor whether devices and monitors can shift enough to matter if they were-or even if blue light on its own is the trigger,” wrote Macworld contributor Glenn Fleishman when Night Shift was first introduced.
