Derivatives, developed by Electronial, is a free and user-friendly educational app available on Android platform. The app provides a comprehensive library of all the common derivative functions. With its easy-to-use interface, users can access various formula types, including derivation rules, basic functions, exponential functions, logarithmic functions, trigonometric functions, and hyperbolic functions.

The app is designed to be accessible to students, teachers, and anyone who needs to perform calculus calculations. The formula library is well-organized and easy to navigate, making it convenient for users to find the specific function they need. The app is lightweight and runs smoothly on mobile devices, making it an ideal tool for on-the-go calculations.

Derivatives is an excellent app for anyone who needs to perform derivative calculations. It's easy to use, comprehensive, and free, making it an excellent addition to any student or teacher's toolkit.