Blue Light Filter-protect eyes

Blue Light Filter-protect eyes is a health & fitness app by 꿈꾸는 개발자. with 50,000+ downloads (about 90K estimated). +2 installs in the last 7 days. Rated 4.6 from 227 ratings. Released Aug 1, 2017. Install growth, rank history, SDKs and ad networks.

From the store listing: “It is a simple blue light blocking app. [What is Blue Light?] It refers to light between 380 and 500 nm where the blue light is strongest in the visible light wavelength. This light is harmful light and exposed to our eyes for a long time will interfere with clear vision, and it will have bad effects on human body…”