OpalCalc is a specific application that combines a notepad and a simple calculator. The program will be perfect as a tool for quoting various types of expenses. In the right part of the main window you can see individual purchases, fees, bills, etc.

(amounts with descriptions), and OpalCalc will automatically capture the numeric values and move them to the left panel where calculations can take place. What is interesting, the application can also operate on dates, hours, etc. In order to get the sum of values, just type the keyword 'total'.

OpalCalc is available in a standard form and in a portable version, which does not require installation and is ready for operation right after download.