sFilter - Free Blue Light Filter is a lifestyle application developed by Siso Mobile for Android devices. This app aims to protect your eyes from the harmful blue light emitted by your device's screen. The app is free and includes a variety of convenient functions for users.

The app's key function is blocking the blue light that reduces eye fatigue. It also has an adjustable blue light filter function with 18 different colors to choose from. Users can quickly change the filter settings in the status bar or use the widget for a simple filter function. The widget icon can be resized and the opacity can be adjusted. The app also has a scheduling function to execute the filter at a specified time.

One of the unique features of sFilter is that it has a low memory and battery consumption. It only includes essential functions to reduce battery usage. Additionally, the screen dimmer reduces battery consumption. The app's blue light filter uses natural colors to reduce eye fatigue and includes 18 different colors to choose from. Users can also adjust the dimmer of the screen for their convenience. Overall, sFilter - Free Blue Light Filter is a great app to protect your eyes from the harmful blue light emitted by your device's screen.