As it is a scientific calculator, you will be able to calculate more than basic operations. It means you can do complex arithmetic, logaritmic and trigonometric calculations.
In addition, you can make operations with parentheses and brackets.
Maatplus also allows you to create notes or highlight results, as well as save any value you consider important for future operations.
MaatPlus is a versatile calculator, very useful for accountants, mathematicians or any other person who needs to do advanced calculations.
Although it's in Spanish it can be very helpful.
Trial version limited to 45 uses.