Calculus Tools is a free Android math application developed by schwiz that offers various tools for calculus students and professionals. The app provides features such as finding derivatives, computing definite integrals, arc lengths, finding Taylor series, plotting graphs of functions (including polar and parametric), and slope fields. Additionally, it includes integral tables and a custom keyboard.

The user interface is simple and easy to navigate, with all the tools clearly labeled and accessible from the main screen. The app's graphing capabilities are especially noteworthy, as it allows users to plot multiple functions on the same graph and customize the appearance of the graph. The app also includes a history feature that saves previous calculations for easy reference.

Overall, Calculus Tools is a useful and reliable math application for anyone studying or working with calculus. Its extensive range of features and user-friendly interface make it a valuable tool for both beginners and advanced users alike.