Attendance App is an Android-based program developed by Josef Vančura that allows users to track their working hours, calculate their total balance, and keep records of their holidays and sick days. This app provides a simple yet efficient way of managing one's time and attendance.

With Attendance App, users can clock in and out by simply clicking on a picture, which can be customized according to their preference. The app assumes that the working day starts and ends on the same day, and that the break time is only for lunch. Users can manually edit or enter data if necessary.

Overall, Attendance App is a great tool for anyone who wants to keep track of their working hours and other related information. It is user-friendly, customizable, and free to use.