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"Night Light" is an Open Source app using KCAL to adjust Blue Light Intensity
"Night Light" is a brand new, free and open source application to help reduce eye strain and sleep deprivation caused by blue light using kcal.
Blue light at night is bad for us for a few reasons, including affecting our sleep or straining our eyes. Blue light can confuse your circadian rhythm, disrupting melatonin production in the brain, and inducing a lagged sleep schedule. It can also lead to increased eye strain in low-light, especially upon waking up or going to bed. On Android, you get many applications which generate an overlay to cancel out blue light, and OEMs have begun adopting blue light filter features as well. Normally the third party options don't work too well and prevent the user from doing things that won't work with overlays, such as application installers. This is a security feature, but can be annoying for the end user. Thankfully there are other, better options available such as Night Light using KCAL.