Twilight Blue light filter for better sleep Pro V 11.4 APK
Urbandroid (Petr Nálevka)
Recent research suggests that exposure to blue light before bedtime can distort your natural (circadian) rhythm and cause inability to fall asleep. The cause is the photoreceptor in her 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 their sleep for about an hour. See references below. The Twilight app makes your device's screen adapt to the time of day. Filter the flow of blue light emitted from your phone or tablet after sunset and protect your eyes with a nice soft red filter. The intensity of the filter adjusts smoothly to the cycle of the sun according to the local hours of sunset and sunrise.
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]