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

4.1 out of 5
67 Ratings

67 Ratings

Editors' Notes

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.

jyelash ,

Amazing app!!

I rarely write reviews but I feel this is a must for this app. I’m not the best at studying, and I’m in a school with tough competition and a lot of smart kids. Sometimes I don’t understand certain teachers and I don’t want to ask my teachers(cuz I don’t like them oop-), and sometimes I still haven’t mastered the basics of something and am too afraid to ask, I’ll come on to this app and learn. There’s many different things, and they will even give you customised topics according to your grade. Topics ranging from chemistry, grammar, how the internet work and even finacing, there’s many many things I can learn and it’s not just for revising for exams, I can learn new things when I’m bored too. AND ITS COMPLETELY FREE!!! Good job developers I love this app, keep up the good work!!

ineedabuckname ,

Perfect for studies

Wonderful app which enables one to search for certain topics which we want to learn about. Has a range of topics, eg. Chemistry, biology and math. Contains examples, quiz, test and explanation videos. Which are very effective. The app is perfect! Not only does it have these wonderful features, it is also FREE!!! I am very pleased and satisfied. This app deserves to be well known and given #1 app ranking. Thank you very much. Please keep up the good work and continue making it free :)


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

    Up to six family members will be able to use this app with Family Sharing enabled.

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