The Schengen calculator is developed in accordance with Regulation (EU) No 610/2013 of June 26, 2013 amended the Convention Implementing the Schengen Agreement, the Schengen Borders Code and the Visa Code entered into force on October 18, 2013.The calculator supports the calculation of stay against the authorized stay indicated on the visa sticker, if this period is from 30 up to 90 days within 180 days and against the validity of the visa.On the basis of analyzing the history of your stay(s) in the Schengen area, the application allows you to calculate the number of days used under a Schengen short-stay visa, the nearest possible date of entry and the extreme date of exit, the maximum duration of the current or planned stay. In addition, the application allows you to determine the earliest possible date of entry into a user-specified number of days that can be a useful tool, for example, when planning a vacation.The application interface allows you to enter the history of your stay(s) as by adding trips (date interval) and simply marking the date on the calendar. In this case, the Schengen calculator allows you to store history of stay(s) and so with each new application is accessed there is no need to re-enter data that can be quite a tedious process.The calculator is a supporting tool only. It does not constitute a right to stay for a period resulting from its calculation. The developer is not responsible for any negative consequences for the user, either directly or indirectly from use of the application.