Scientific Calculator

Scientific Calculator is exactly what it says it is: an app that turns your Android into a scientific calculator. Plus it's one of the few Android calculators that can handle equations with complex numbers.

In the setup options you can lightly adjust the look of the calculator and activate or deactivate some of the superficial options. For example, you can set the screen to stay lit whenever you have the app open, or activate vibrations for when you tap the buttons.

Scientific Calculator is a great scientific calculator for Android that has all the features you could need from an app like this. The interface even looks like a real scientific calculator.