CF.lumen adapts the colors of your Android device according to the position of the sun or your custom settings. Android 5.0 is now required. Versions up to v3.16 that support 4.4 KitKat are still available on the XDA thread (see below). Performance drop from v3.60? Activate performance mode. When you use the default settings, your screen will get a warmer tint (lower color temperature) when the sun goes down, greatly reducing the strain on your eyes. Blue light makes your brain want to stay awake, and a lower color temperature reduces the amount of blue that is displayed; Wearing this at night reduces the strain on your brain to keep you awake at night. During sleeping hours, a red filter is used by default. Red strains the eyes to a minimum and retains night vision.
Required Android Versions : Lollipop [5.0–5.0.2] - Marshmallow [6.0 - 6.0.1] - Nougat [7.0 – 7.1.1] - Oreo [8.0-8.1]