While Calculator won’t do your Calculus homework for you, it’s at least a lot easier to navigate than your handheld graphing calculator—prettier, too, and a lot cheaper.

The first handheld graphing calculator, the Casio fx-7000G, appeared in 1985. Since then, graphing calculators have become a common – and controversial – tool for learning mathematics.

Sometimes you just need to make a graph. If your TI-84 isn’t handy, Desmos Graphing Calculator is a good backup to have. The app accepts both functions and tables of x and y values as inputs and ...