White Screen is a free utility app developed by Sasha Zay for Android 9.0 and above. As the name suggests, this app displays a white screen, which can be used for various purposes. The app has a simple user interface, and it is easy to use.

The main functionality of White Screen is to provide a soft source of white color, which can be used to calibrate the color temperature of the camera. Additionally, it can be used to test the phone screen for broken pixels. The app can also be useful for photographers or printmakers who need a soft white light source. It is worth noting that the screen brightness is adjusted via the phone settings, so the app does not have a brightness control feature.

Overall, White Screen is a simple and useful utility app that serves its purpose well. It is a great tool for anyone who needs a soft white light source on their phone.