Calculadora Complejos is a free Android application developed by Rufino Díaz Rodríguez in the Utilities & Tools category. It is a calculator that allows users to perform operations mixing multiple complex terms in polar form 2<30 and rectangular form 2+3i. The app supports the use of expressions as long as you want with parentheses, with functions, and more. With the up and down arrows, users can retrieve the last results. The app also allows for correction of operations character by character, deletion of an entire operation, or deletion of everything. It is important to note that angles must be expressed in degrees.

Moreover, the app also includes features for electrical protections, such as the calculation of trip times according to Curve Dial and Currents or the Curve Dial necessary for a clearing time and currents in various types of IEC Curves. Overall, Calculadora Complejos is a useful tool for those who need to perform complex calculations involving polar and rectangular expressions, as well as electrical protections.