It s called night shift and it s configured in the settings app under displays.
Blue light filter ipad mini 1.
Some display accessibility settings including invert colors grayscale and increase contrast might turn off night shift or true tone display.
See reports on blue light symptoms.
The answer is no there is no app for ipads that haven t been jailbroken.
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I m assuming you mean an app to reduce blue light from the display such as f lux.
Ipad air 2 ipad air.
The good news is that apple has built the functionality into the operating system.
Make sure this fits by entering your model number.