Don't Sleep! is a lightweight app which allows you to manage the screen timeout and keep the screen on via the push of a button.

This application can be used to prevent your phone from sleeping (instead of modifying the Display Timeout in Settings, you can do this via the push of a button), or to set a sleep timer which you can use when watching videos on YouTube, or Netflix, or for any app which uses a Wakelock.

The application adds a Tile which you can use as a shortcut to prevent your phone from sleeping, or set a timer for your screen to turn off.

In case the app appears not to work correctly on your device, please contact me with the problem and the device make/model (it appears not all devices support the way the application tries to keep the screen awake).