Calenculator

Calenculator is a software utility that can help you count the difference in days between two dates. This program is incredibly small, consisting of less than one hundred lines of code, and is incredibly lightweight.

One of the fundamental features of Calenculator is that it allows you to input two dates into the left calendar widget and the "Difference in days" spinbox, after which you can instantly see the calculation results in the right calendar widget. This feature allows you to quickly determine the duration of a specific event, such as a course or trip.

The software also enables you to determine how many days you haven't smoked by entering the date that you stopped smoking on the left calendar widget and today's date on the right calendar widget. The "Difference in days" spinbox will then display the number of days that you have gone without smoking.

Another useful feature of Calenculator is that you can use it to plan your trip quickly. By entering your trip's starting and ending dates into the left calendar widget, followed by the number of days you plan to stay (as a difference), the right calendar widget will reveal the corresponding day number.

Overall, Calenculator is an intuitive and easy-to-use utility program that can provide you with quick and accurate calculations of date differences. The only requirement needed is the Qt 4.x framework. If you are looking for a simple and efficient way to count the days between two dates, you should give this software a try.