Twilight Blue light filter for better sleep Pro V 12.1 APK
Urbandroid (Petr Nálevka)
Are you having trouble falling asleep? Are your children hyperactive when they play with the tablet before bed? Are you using your smartphone or tablet late at night? Twilight may be a solution for you! Recent research suggests that exposure to blue light before sleep can distort your natural (circadian) rhythm and cause an inability to fall asleep. The cause is the photoreceptor in the eyes, called melanopsin. This receptor is sensitive to a narrow band of blue light in the 460-480 nm range that can suppress the production of melatonin, a hormone responsible for your healthy sleep-wake cycles. Experimental scientific studies have shown that the average person reads on a tablet or smartphone for a couple of hours before bedtime can delay your sleep by about an hour. See the references below.
Required Android Versions : Ice Cream Sandwich [4.0.3–4.0.4] - Jelly Bean [4.1–4.3.1] - KitKat [4.4–4.4.4] - Lollipop [5.0–5.0.2] - Marshmallow [6.0 - 6.0.1] - Nougat [7.0 – 7.1.1] - Oreo [8.0-8.1]