This app is a widget to show you date and time.
On the transparent background, it doesn't show you with the number, but with the letters.
One fascinating thins is that it use fonts of the OS system(which you selected), so you can. change app's font with ease.
rectifying : twelve -> twenty ^^
Tags: text calendar widget , text/calendar , 달력 위젯 재부팅 , 안드로이드 캘린더 위젯 , simple text calender widget , text calendar , 캘린더 위젯 , widget text calendar