This is an app for displaying a calendar in the notification bar.
The calendar is displayed in the notification bar, not as a widget on the home screen or within the app.
You cannot write down schedules or set alarms or reminders.
You can adjust how the month and day of the week are written, the interval between dates, etc.
Even if the font installed on your device for displaying text in the notification bar is not a monospaced font, you can adjust the spacing of each element to display the calendar correctly.
(Depending on the device or font, adjusting the spacing between elements may not align each line of the calendar properly.)