If you're taking math or science courses, you'll most likely only be allowed to use a handheld calculator on exams. When you're on your own, you're better off using something like Python.

In this Kivy Python tutorial, you will learn how to use Kivy for Python app development. By the end, you’ll understand how to start building cross-platform apps for Android, iOS, and Windows ...

Interested in learning Python? Jack Wallen takes you through your first steps in building a simple application to take user input and write it to a file.