Screen ON Stay awake is an Android app developed by EONSOFT that helps prevent the smartphone from automatically turning off the screen in various ways. It is a free utility tool that allows you to control the screen of your smartphone and keep it on. With this app, you can use your smartphone without worrying about the screen turning off or going into sleep mode.

The app provides several options to keep the screen on, including a feature that prevents the screen from turning off while charging. It can also be used in conjunction with the sleep mode reservation (timeout setting) on the smartphone's display preferences. Additionally, it allows you to stay on screen without the lock screen and set the power-saving mode and auto-sleep using the display setting shortcut.

Overall, Screen ON Stay awake is a useful app for those who need to use their smartphones for prolonged periods without interruption. It is easy to use and provides several options to keep the screen on. However, it may not be suitable for those who prefer their smartphones to conserve battery life.