Download this app to solve complex equations.

Mobile devices' standard calculator apps do not provide enough functions for solving scientific problems. This app will save you from carrying a smartphone and a separate scientific calculator.

Scientific Calculator Free includes unit conversion, memory, result history, percents, a choice of algebraic or RPN operation, a physical-constants table, trigonometric functions and digit-grouping options. You will also find binary, octal and hexadecimal settings and engineering, scientific and fixed-point display modes.

The app's dark interface makes it resemble a physical scientific calculator. A fully free app, Scientific Calculator Free also has a light footprint. You can run it efficiently on any Android device that uses version 3.0 or later.