SwiftCalc

Swift Calc is a program designed for Mac that helps you find the correct results for both basic and complex math equations.

This application offers you the answers you require as you type the equation, supports a wide range of functions and operators, and highlights syntax errors.

The utility suits your everyday calculation needs providing you with the answers you require within moments. You can use your keyboard or click over the symbols' icons to write your equations, undo typing whenever it's necessary, and even import calculations from text files.

I liked the fact that the program came with a comprehensive help guide where I could find any information regarding all built-in functions (sin, cub, deg, etc.), supported operators, and much more. You also have access to dozens of expression samples to learn the syntax rules.

Another good aspect about Swift Calc is that it allows you to save the equations to a TXT file in case you need them later.

As a conclusion, Swift Calc proves to be a reliable solution when it comes to solving mathematics equations. The program is simple to use, provides you with plenty of useful features, and is free of charge.