On Android, consider checking out Graph 89 Free —though you’ll need a .ROM image for it to work (something you can extract from your existing graphing calculator or surely find elsewhere).

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.

These devices can do all of the calculations of a scientific calculator, plus graph equations, make function tables and solve equations.

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 ...

Like textbooks, graphing calculators are still a necessary (and expensive) accessory for math and science students in high school and college. Sure, there are calculator apps for tablets and ...