Screen Filter:Pro, Blue light

50% off commemorating the launch! It is a screen filter application that blocks blue light (blue light) of 400 ~ 450 nm band.
We use 700 ~ 750 nm as compensation color band for blue light (blue light) interception.
The 700 to 750 nm band is the most comfortable color gamut of visible areas.
Pro version has no ads.
Protect your eyesight with blue light blocking.

Your smartphone or tablet screen will generate a blue light.
Blue light (blue light) makes your eyes nervous and you can not take a good night sleep.
Screen filter is an application that removes blue light.
Blue light (blue light) removal as the most comfortable color filter for eyes, as well as protecting eyes fatigue.

It is 50% off event in commemoration of the launch. (Prices shown on the store are discounted prices.)