Kalendarz Liturgiczny is a free Android application developed by 3kawki.pl. It is a lifestyle application that combines the calendar days with Catholic holidays, commemorations of saints and blessed people, and presents a Gospel passage for reflection for each day. The app is an excellent tool for Catholics who want to keep track of their religious practices and deepen their faith.

The application is straightforward to use, and the interface is user-friendly. The main screen displays a calendar with the current month, and the user can navigate through months with ease. By clicking on a specific day, the user can view the Gospel passage for that day, the name of the saint or blessed person celebrated, and a short description of their life. The app also provides information about liturgical colors, which is helpful for those who attend Mass regularly.