# Calculator++ Scientific calculator with sleek interface and powerful capabilities. [Get it on Google Play](https://play.google.com/store/apps/details?id=org.solovyev.android.calculator) [Get it on F-Droid](https://f-droid.org/en/packages/org.solovyev.android.calculator/) ![Demo how the app looks like](https://raw.githubusercontent.com/Bubu/android-calculatorpp/master/assets/intro.png "An image showing three phone screens, each showing one view of the calculator app") ★ Save your time! * Access additional features from the main screen of the app using gestures. For example, to use «%» slide button «/» up * You don't need to press «=» anymore - result is calculated automatically * Copy/paste with a single button press * App supports both portrait and landscape screen orientations ★ Personalize! * C++ has two layouts: standard and engineer. Choose one which suits you best either from the initial wizard or from the application settings * Set theme you like * Add home screen widget ★ Do calculations without switching between the apps! Calculator++ can work in a separate window floating over other applications on your phone ★ Calculate percentages, square roots, powers, trigonometric functions! Calculator has a big variety of built-in functions and supports adding new user-defined functions ★ Plot 2D and 3D graphs! Several functions can be plotted simultaneously ★ Use powerful mathematical capabilities of the app: * Do calculations with variables and constants * Use built-in functions or add your own * Integrate and differentiate * Do calculations with fractions and simplify expressions * Do calculations with complex numbers ## License This project is licensed under [Apache License 2.0](https://www.apache.org/licenses/LICENSE-2.0). The license of this repo was added based on [the comment of the original author (Sergey Solovyev)](https://github.com/serso/android-calculatorpp/issues/184#issuecomment-317447082) on 2017-07-24 in which he wrote: > The project uses Apache License, Version 2.0 (see source files for example). Unfortunately, I didn't have time to declare the licence in a proper way The LICENSE file of this repo is [what Apache.org provides in text format](https://www.apache.org/licenses/LICENSE-2.0.txt). The only modification made was changing the name from `LICENSE-2.0.txt` to `LICENSE`.