Twilight Blue light filter for better sleep Pro V 11.8 APK
Urbandroid (Petr Nálevka)
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 460-480nm range that can suppress the production of melatonin, a hormone responsible for your healthy sleep-wake cycles. In experimental scientific studies it has been shown that the average person reads on a tablet or smart phone for a couple of hours before going to bed, they can delay their sleep by about an hour. See the references below. The Twilight app makes your device's screen adapt to the time of day. It filters out the stream of blue light your phone or tablet emits after sunset and protects your eyes with a nice soft red filter.
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]