Function Calculator is a free Android application developed by semtle software. It falls under the Business & Productivity category, offering users a comprehensive math tool with a wide range of features.

With Function Calculator, users can perform the four fundamental math operations - addition, subtraction, multiplication, and division. In addition, the app provides extra math operations such as exponential operation, modular operation, and percent operation. It also includes mathematical constants like Pi and E, as well as engineering functions like sin, cos, tan, log, ln, and more.

The app offers traditional calculator buttons like M+, M-, MR, and GT, making it convenient for users who are accustomed to these features. One standout feature is the "clone" button, which allows users to copy math expressions and reuse them. The app also includes cursor control buttons for easy navigation and a "del" button and "AC" button to delete input.

Function Calculator provides users with text size control buttons, allowing them to customize the display according to their preferences. Additionally, there is a vibration button for tactile feedback during calculations.

One of the most impressive features of Function Calculator is its programming capabilities. Users can create their own mathematical functions easily using a Javascript-like coding syntax. The app offers code templates to assist users in creating thousands of mathematical functions for various purposes, such as unit conversion, future value calculations, interest rates, and more. The app also provides a simple and easy-to-follow coding tutorial, making it accessible to users with varying levels of programming experience.

Function Calculator is a powerful math tool for Android users, offering a wide range of features and programming capabilities. Whether you need to perform simple calculations or create complex mathematical functions, this app has you covered.