Khan Academy

If you want to learn a little bit of everything, then the Khan Academy is perfect for you. This app is filled with dozens of different classes that you can take at a moment’s notice.

What makes Khan Academy stand out is that it’s completely free. You can access all the classes, videos, and articles without spending a single dollar, which is perfect for students or people on a budget.

The app features different types of classes. From math to science and even politics, you’ll surely find something you like. Besides classes, you can also find quizzes and exercises to test everything you just learned.