Color Calibrator can be used to reduce eye strain, by adjusting the screen colors to natural. It can filter out the intense colors produced by your phone. Features like night shift can also relief eye irritation and help you have a good night sleep. Features: - Blue light reduction - Create multiple schedules - Save power by built-in screen dimmer - Eye protection from intense colors - Translucent effect, to set accurate colors - Pre-adjusted configuration - Screen color adjust Permissions: - Run at start-up, To start the app again after restart - Display system-level alert, To draw color overlay on top - Network, To facilitate in-app purchase