tCalendar is a free lifestyle application developed by Taosoftware Co.Ltd. It is compatible with Android OS 1.1 or later and is a simple yet useful calendar app. The app displays a calendar icon on the home screen with today's date, and the date on the icon changes every day.

The app is easy to install and use, and it requires no additional setup or configuration. It is a great tool for people who want to have a quick glance at the date without having to open the calendar app. The app has been updated to support Android OS 1.5 and 1.6 in its latest versions V1.0.2 and V1.0.3 respectively.

Overall, tCalendar is a great app for those who need a simple and effective way to stay up-to-date with the date. It is a must-have app for those who want to have quick access to the date on their home screen.