Bluelight Filter is a free Android app which aims to reduce the harmful effects of the blue light emitted by smartphones and tablets. This could reduce eye strain, help you sleep better, and generally make the screen easier to read. The app is a tiny 83KB, ad-free and doesn’t ask for any special permissions, which makes for a quick and easy installation. There are various bundled filters, each with their own custom tint. You can select whatever you want or add a new filter of your own. Switch filters automatically at a preset time Full control of opacity levels means… [Continue Reading]