Calculator++ is a multipurpose calculator app that offers a slick and intuitive user interface. It is designed to save time and make calculations easy, whether you are solving simple or complex problems. The app offers additional features that can be accessed from the main screen using gestures, such as sliding the button to use the percentage sign. The result is calculated automatically, so you don't need to press the equal sign anymore. The app supports both portrait and landscape screen orientations, and you can copy/paste with a single button press.

Personalization is another feature of Calculator++. The app has two layouts: standard and engineer, and you can choose the one that suits you best from the initial wizard or the application settings. You can also set the theme you like and add a home screen widget. The app can work in a separate window floating over other applications on your phone, so you can do calculations without switching between apps.

Calculator++ offers a big variety of built-in functions, including percentages, square roots, powers, and trigonometric functions. You can also add new user-defined functions. The app supports plotting 2D and 3D graphs, and several functions can be plotted simultaneously. You can do calculations with variables and constants, use built-in functions or add your own, integrate and differentiate, do calculations with fractions and simplify expressions, and do calculations with complex numbers.

The app supports devices with Android version 2.2 and higher and is open source. The app contains adverts which are shown on the secondary screens. To remove them, you can purchase a special option from the application settings. Calculator++ is available on Facebook and Vkontakte.

In summary, Calculator++ is a versatile calculator app that offers a range of features to make calculations easy and efficient. It has a slick and intuitive user interface, and you can personalize it to suit your preferences. The app supports a big variety of built-in functions and allows you to add your own. You can also plot 2D and 3D graphs and do calculations with variables and constants, fractions, and complex numbers. The app is open source and supports devices with Android version 2.2 and higher.