This app is created for those who want to have a short duration set for their screen lock, but at times may want to delay that screen lock time without having to change their settings and possibly forgetting to change them back! For example, you may be using a map navigation tool which will require you to turn the screen on once in a while, but it would be a real pain to have to enter your password every time.
Please note that if you have installed other apps that also temporarily unlock your screen (without the timer feature that this app has), you will need to uninstall those for this app to work properly.
These are the states of the widget: