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Night Shift (software)

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Night Shift is a built in software feature of iOS and macOS. It was introduced into iOS in iOS 9.3 and into macOS in macOS Sierra 10.12.4.[1] The feature changes the color temperature of the display towards the yellowish part of the color spectrum[2] that reduces some of the blue light from the screen.[3] Apple claims that the feature may help users have a better night's sleep by filtering blue wavelengths from the display.[4] The effectiveness of this feature is disputed.[5] The feature is similar to the functionality f.lux provides.[6][7]


The Night Shift feature is compatible with all 64-bit iOS devices running on iOS 9.3 and above[8] and Macs from 2012 and later running on macOS Sierra 10.12.4 and above.[9]


The feature can be turned on in Settings (in iOS)[10] and in System Preferences (in macOS)[9] and can be toggled on or off manually in the Notification Center (in macOS)[11] or in the Control Center (in iOS).[2] The feature can be enabled or disabled with Siri in iOS[8] and macOS.[12] The feature can set so it is enabled at sunset and turn off at sunrise (the default) or turned on and off on a custom schedule.[2] The feature when set to enable at sunset and disable at sunrise relies on the user's approximate location to determine the time of sunset and sunrise.[13] The user can also customize the intensity of Night Shift in Settings (iOS)[2] or System Preferences (macOS).[14]

See also


  1. ^ "How to use Night Shift on your Mac". iMore. Retrieved 2018-06-18.
  2. ^ a b c d "How to use Night Shift on your iPhone or iPad | iMore". Retrieved 2017-04-29.
  3. ^ "Can Apple's color-shifting screen really help you fall asleep faster?". The Verge. 2016-03-29. Retrieved 2017-04-29.
  4. ^ "iOS 9.3: The new Night Shift feature probably won't help you sleep better". Macworld. Retrieved 2017-04-29.
  5. ^ Buckley, Cami (2021-04-25). "Is Night Shift really helping you sleep better?". Brigham Young University News. Retrieved 2021-05-08.
  6. ^ Bell, Karissa. "F.lux creators ask Apple to open Night Shift features to developers". Mashable. Retrieved 2017-04-29.
  7. ^ Bell, Karissa. "How to use Apple's new Night Shift feature in iOS 9.3". Mashable. Retrieved 2017-05-20.
  8. ^ a b Benjamin, Jeff (2016-03-23). "How-To: Set up and use Night Shift mode on iPhone and iPad [Video]". 9to5Mac. Retrieved 2017-04-29.
  9. ^ a b "How to Use Night Shift in macOS Sierra 10.12.4". Retrieved 2017-04-29.
  10. ^ "How to enable Night Shift in iOS 9.3". CNET. Retrieved 2017-04-29.
  11. ^ Wong, Raymond. "Apple's upcoming Mac update will include a long-awaited feature that will help you sleep". Mashable. Retrieved 2017-04-29.
  12. ^ Hall, Zac (2017-01-25). "How to enable Night Shift for Mac and how it works on macOS 10.12.4 [Video]". 9to5Mac. Retrieved 2017-04-29.
  13. ^ "How to Use Night Shift Mode in iOS 9.3". Retrieved 2017-04-30.
  14. ^ "How to adjust macOS Sierra 10.12.4's Night Shift settings". Macworld. Retrieved 2017-04-29.
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