График смен Калькулятор дат is an Android application developed by D. KDev that caters to the needs of shift workers. The app supports three types of work shifts: standard, paired, and night shifts. It allows users to create schedules with fixed or variable working days, and day and night shifts. The app also includes seven types of days, including workdays, night shifts, days off, vacations, overtimes, sick leaves, and additional days. Users can customize the color scheme of the calendar and switch between light and dark themes.

The app also features a date calculator that performs various mathematical operations with calendar dates. It can calculate the difference between two dates in days, months, and years, and determine the date that falls after or before a specified number of days. The app supports leap years and has no time frame limitations.

Overall, График смен Калькулятор дат is a practical tool for shift workers who need to manage their schedules and perform calculations with calendar dates. The app is free to download and use, and it can be a valuable addition to any shift worker's toolbox.