Py

Py is an app that allows you to take free programming courses in Swift, Python, Javascript, and HTML/CSS. All these courses are interactive, so you're not just reading or watching videos, but also doing exercises, writing code or taking exams.

You can obtain from one to three stars in each lesson of each course, depending on how well you answer the questions. Upon completing courses you also gain experience and are able to level up.

In order to use Py it's not necessary to have a user account. You can take courses in different subjects without having to be registered. The problem in that case, of course, is that you can't save your progress. Fortunately, not only is it easy to create a user account, it's also free.

Py is an app that lets you learn to program in different languages, very easily. Best of all, you can learn from the comfort of your Android device.