Since it is known by everyone and doesn't provide great complications, CrossGL Surface Calculator is suitable for all kinds of users. From those that are tired of the Windows calculator to those that only want to have a nice calculator to use. Furthermore, CrossGL Surface Calculator includes a currency converter.
The currency converter includes many configuration options. By default it will convert any result to American dollars, nevertheless you can configure CrossGL Surface Calculator so that it converts almost any kind of currency.
Despite the fact that it doesn't include advanced options, the truth is that CrossGL Surface Calculator covers it purpose perfectly. So that anyone that wants to download CrossGL Surface Calculator for free will obtain a calculator that is ready for the vast majority of uses.