Google Calendar

Screen (2020-)
Visuals: On a white background, there is a rounded white square with a fold (colored ) at the bottom right, with the rest of the square having a thick border colored yellow and two shades each of green and blue in different sections. In the center of the square is "31".

Technique: None.

Audio: None.

Availability: Can be seen when you start the Google Calendar app on a tablet or phone.