Khan Academy 4+

You can learn anything

Khan Academy

    • Free



You can learn anything. For free.

Spend an afternoon brushing up on statistics. Discover how the Krebs cycle works. Get a head start on next semester's geometry. Prepare for upcoming exams. Or, if you're feeling particularly adventurous, learn how fire-stick farming changes the landscape of Australia.

Whether you're a student, teacher, homeschooler, principal, adult returning to the classroom after 20 years, or a friendly alien trying to get a leg up in earthly biology — Khan Academy's personalized learning library is available to you, for free.

- Learn anything, for free: Thousands of interactive exercises, videos, and articles at your fingertips. Study math, science, economics, finance, grammar, history, government, politics, and much, much more.

- Sharpen your skills: Practice exercises, quizzes, and tests with instant feedback and step-by-step hints. Follow along with what you're learning in school, or practice at your own pace.

- Keep learning when you're offline: Bookmark and download your favorite content to watch videos without an internet connection.

- Pick up where you left off: Tailored to your current learning level, our mastery system gives instant feedback and recommendations on exactly which skills and videos to try next. And, if you choose to create a free account, your learning syncs with, so your progress is always up-to-date across all your devices.

Learn using expert-created videos, interactive exercises, and in-depth articles in math (arithmetic, pre-algebra, algebra, geometry, trigonometry, statistics, calculus, differential equations, linear algebra), science (biology, chemistry, physics), economics (microeconomics, macroeconomics, finance and capital markets), humanities (art history, civics, finance, US history, US government and politics, world history), and more (including computer science principles)!

Already familiar with the Khan Academy website? Not all functionality is available in this app. Community discussions, computer programming content, test prep, parent tools, teacher tools, and district tools should all be accessed directly at

Khan Academy is a 501(c)(3) nonprofit organization, with the mission of providing a free, world-class education for anyone, anywhere.

What’s New

Version 8.1.1

∙ Introducing Experimental Dark Mode! Dark Mode is currently available in select areas of the app. We have future plans to extend it everywhere, but for now, think of it as a moonlit sneak peek. The feature can be turned on and off under Settings.
∙ Bug fixes and performance improvements.

Ratings and Reviews

4.5 out of 5
75.8K Ratings

75.8K Ratings

Editors’ Choice

Khan Academy is an education app for everyone—whether you’re a parent helping your first grader with geometry or a postgrad looking for a deep dive into microfinance. If there’s a topic you want to learn about—no matter how basic or advanced—chances are Khan Academy has a video lesson for it.

Sssssnice ,


I personally love this app. My son and daughter has been using it until they were toddlers since they are twelve now they still use it! I told them to use it a lot since that they could still use it when they are son he uses it when he has stress with his homework so that he could have more ideas! I think this app is made for everyone because when they were just little small toddler I helped them on some stuff so they could do some simple math an now since they are older now I could let them be so they could experience the world of learning in Khan Academy! I decided to write a review this time of the year because since they are back to school they could maybe have some experience in what their class is learning! Something they really like about this app and I do too is that it corrects them if they got it wrong so they try it again. But um mean during quarantine when school did not start yet they have been using this app for hours...every time their mom and I ask them out for lunch or breakfast they always say 1 more hour 🤗. I think they really like it now but I think they are too into it their mom said maybe their growing up to fast and forgetting about us. But I think that they just need to have some time and think! OTHERWISE THEY LOVE THE APP!!! THANK YOU SO MUCH FOR MAKING THIS APP AND YOUR TEAM WE LOVE IT!!!!

stuntbear_nicknamestolen ,

Great app but a minor complaint

This is a great application, and it costs you absolutely nothing. However, if you are going to delve into Multivariable Calculus or other subjects that require you to use “special” characters such as Euler’s number e, which they use often, to enter your answers to the posed problems in the practice, then good luck trying to enter it. For instance, if you are asked to find the gradient of a function f(x y z) = y^2*z +e^x Then it will be <e^x, 2yz, y^2>. There is no button for the number e to be found, so how can one enter the answer? You can’t! That is only one example of something that needs to be addressed. Your answer is marked as completely incorrect all because because they didn’t provide you with the means to enter the correct answer correctly. There is no way to simply type the number e on the provided keyboard that pops up. I searched and searched their help files, but that was to no avail. I tried to copy and paste it from another keyboard, and that proved futile as well. This is the ONLY reason that I didn’t give this five stars!! There is a lot that one can learn from Khan Academy, and please get me wrong. I love this app and have used it for years. I have donated to their funding drives, and if you use it, then you should consider doing so.

Developer Response ,


We'd love to have a greater understanding of the issue you're running into. Could you please submit a support request in our Help Center? Here's the link:

Thank you for being a part of Khan Academy!

App Privacy

The developer, Khan Academy, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy.

Data Linked to You

The following data may be collected and linked to your identity:

  • Usage Data

Data Not Linked to You

The following data may be collected but it is not linked to your identity:

  • Contact Info
  • Search History
  • Identifiers
  • Diagnostics

Privacy practices may vary, for example, based on the features you use or your age. Learn More

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