Light Filter - Blue color, red color APK

Eyes feel tired during night reading on the phone?
- That is due to blue light. Blue light from your phone and tablet screen is the visible light spectrum (380-550nm) for circadian regulation
- Blue light filter is used to reduce blue light by adjusting the screen to natural color

What is blue light?
It's part of a natural light spectrum, which disturbs the circadian rhythm and causes sleeplessness, headache and bad eye health

Feature:
- Reduce power usage - Bluelight flux night shift reduces the night screen power usage. Use natural light filters to reduce night light power usage while relieving chronic headache and repairing circadian rhythm curing your sleeplessness.
- Help you read book at night
- Easy to change your background color
- Multi color for background
- Use can change blue light, red light, yellow light,.... fits your eyes
- Add/ save unlimit color filter for each category
- No Root needed.