You can easily set the timer with the widget.
You can set the waiting time for cooking, cup noodles(instant noodles), etc. when you want to go to sleep a little on the train.
Since it is a widget, you can set the timer without opening the application.

It is useful because it can be used as an alarm or alarm clock.

【Note】
Depending on the android version, the background execution may be suppressed and the sound may not sound.
Please specify this application by "Exclude optimization", "Execute background", etc. in android settings.
If you absolutely do not start, delete the widget and place it again to use it.