While you may still need to hang on to your graphing calculator for exams, when you're doing your homework, exploring data, or even just messing around, Python plots look better and are also free.

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).

<p> Sometimes you just need to make a graph. If your TI-84 isn&rsquo;t handy, Desmos Graphing Calculator is a good backup to have. The app accepts both functions and tables of x and y values as ...