Is your sleep disturbed by your smartphone. Bluelight screen filter plus app suggests an easy solution. This app reduces the eye strain. It is also helpful in reducing stress upon eyes during night browsing. Spending a lot of time fixating on data from smartphones is the new normal, especially in the business world. And it may be robbing millions of smart phone users of untold hours of sound sleep. The blue light filter screen protector reduces eye strain associated with tablet and smartphone use.