You can learn anything. For free.

Spend an afternoon brushing up on statistics. Discover how the Krebs cycle works. Learn about the fundamentals of music notation. Get a head start on next semester's geometry fundamentals. Prepare for the SAT, GMAT, LSAT, MCAT, NCLEX-RN, and AP 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 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: Your learning syncs with, so your progress is always up-to-date.

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

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 6.10

∙ Introducing support for Hindi!
∙ Bug fixes and performance improvements.

Ratings and Reviews

3.5 out of 5
7.9K Ratings

7.9K 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.

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What an incredible app. I’m so impressed. This company deserves loads of money to be thrown at it for making it free. My son has just switched from a Cambridge school to an American School and missed a lot of work. I think we were both about to give up. I didn’t know where to start to help him and being his new school is completely iPad based we felt deep despair at just the thought of trying to navigate through classrooms codes and half working text book apps. Now it’s all here in one place! Simple well explained and the practice really gets your confidence going. He had some maths homework and instead of the total melt down we both would have had trying to work out what was going on we flew through it!! THANK YOU! I love the fact that all the grades are here too so if there is a concept he is struggling with we can go back in the grades to see where that was introduced and work through it! We have been struggling for months trying to find the answer on line. It was only due to the fact that Khan kept coming up that I googled it and found the app. I truly pray this company gets loads of financial support to keep this app going! THANK YOU THANK YOU THANK YOU!!

Developer Response ,

Hi, there!

Thank you so much for taking out the time to share your feedback on the app. :)

We truly love hearing about the impact Khan Academy has on the community! If there’s ever anything we can do to make learning with Khan Academy an even greater experience for you, please let us know!

sky_blue02 ,

Great math lessons, terrible history lessons...

I had used this app in the past for math and it was great for that. The history lessons, however, are atrocious. Rather than objectively presenting the facts, it gives a warped view of things. For example, the authors have somehow figured out how people ‘felt’ during history. No citations. No quotes. They just claim that this person/group felt this, that person/group felt that. I find the personal feelings of past figures to be secondary to learning the course of events. But, if they did feel some need to include them, they could at least cite sources or provide quotes. I saw none. It turned what could’ve been a factual history lesson into some subjective mind-reading of the past. All it was really instructing me on was someone’s opinion of what people in the past felt. It wasn’t educational. Not only is there a bias of perspective — today’s opinion of the past may differ greatly from how people in the past actually experienced it. Opinion and feeling are not the point. It’s history, not group therapy. As I said, if you want to include feelings, at least use quotes, cite sources. But, again, that really isn’t the point. History is not about the feelings of one person or even a group of people, it’s about objective events. Sadly, there was so little of that here, I just deleted the app. What a sad thing education has become!


Khan Academy
71.9 MB

Requires iOS 11.0 or later. Compatible with iPhone, iPad, and iPod touch.


English, Armenian, Bengali, Bulgarian, Czech, French, Georgian, German, Hindi, Indonesian, Korean, Norwegian Bokmål, Polish, Portuguese, Serbian, Simplified Chinese, Spanish, Turkish

Age Rating


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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