"Screen Burn Check" is an app that helps detect screen burn-in and display diagnostics. It's designed for devices with OLED and AMOLED displays, which are prone to screen burn-in if left on a single static image for too long. The app helps to run a series of tests to check for screen burn-in. It also offers some precautions to avoid screen burn-in. In addition to its burn-in detection and repair capabilities, the app also includes display diagnostics to help users ensure their device's display is functioning properly. Overall, "Screen Burn Check" is a useful tool for anyone looking to prevent screen burn-in on their OLED or AMOLED device.