When the application is launched, a switch for switching resident status is displayed.
When the switch is turned on, the application will confirm permission and start resident.
To customize the clock, you need to watch a video ad or pay in-app purchase.
In the settings, you can set the font, size, display position, and background of the clock.
In addition to the clock, you can add one line to display the date and day of the week, battery level and temperature.
Notifications are necessary for the app to work. You may be able to change whether the notification is displayed by long-pressing it.