Do Not Sleep is an Android application developed by Diogo Ferreira Dev. This is a free utility tool that keeps your device screen on as long as the app's service is running. It provides an alternative method to change the display timeout if the app fails to prevent your device from falling asleep. The app's menu allows you to toggle between the two methods easily.

Do Not Sleep has been successfully tested on OnePlus, Xiaomi, and Huawei devices without using the alternative method. However, it is important to note that the app causes high battery drain, so it should be used with caution. Overall, Do Not Sleep is a simple yet effective app for users who need to keep their device screens awake.