Khan Academy

4.3
165K reviews
10M+
Downloads
Content rating
Everyone
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About this app

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 http://khanacademy.org, 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 http://khanacademy.org.

Khan Academy is a 501(c)(3) nonprofit organization, with the mission of providing a free, world-class education for anyone, anywhere.
Updated on
Mar 11, 2024

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
No data shared with third parties
Learn more about how developers declare sharing
This app may collect these data types
Personal info, App activity and 2 others
Data is encrypted in transit
You can request that data be deleted

Ratings and reviews

4.3
149K reviews
Kit M
May 23, 2024
I'm a dyscalic adult trying to relearn my math skills. I'm really impressed with the detail it goes into explaining the concepts. How I was taught was mostly rote memorization, but this actually teaches the concepts. I'm still exploring the app, but it looks like it can easily be scaled up or down depending on a learners level and there's a lot of subjects. Great for anyone trying to teach as well. I think the app is a little ugly and not always user friendly. I'd give it 4.5 stars if I could.
13 people found this review helpful
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Khan Academy
May 26, 2024
Hi, Kit! Thank you so much for taking 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!
Nathan Lewis
April 24, 2024
Love this app. The lessons are great and exercises actually challenge what you've been taught. I'm probably much older than most people using the app, but I love math (like a game to me). The only issue I have is that some time recently they changed the input and I don't like it. They should also address the issue of nothing happening when you click on a box to input an answer.
27 people found this review helpful
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Khan Academy
May 6, 2024
Hi, Nathan! Could you please try a few basic troubleshooting steps? Oftentimes, uninstalling and reinstalling the app and/or closing any background apps on your device solves any issues you could be running into. If the issue persists, please submit a support request in our Help Center: http://khan.co/KA-support. Hope this helps!
Guaualako-An
May 19, 2024
Incredible app! Teaches well, and the variety of subjects is astounding! The reason that I'm giving it four stars however, is because all of the videos recorded by the woman took me back to preschool. She talks down to the viewers in a peppy voice, and she started singing about deoxyribonucleic acid? It makes it difficult to watch the videos. Great app otherwise!
5 people found this review helpful
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Khan Academy
May 19, 2024
Hi, Guaualako-An! Thank you so much for taking the time to share your feedback on the app. :) We truly love hearing about the impact Khan Academy has on the community!

What's new

∙ 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.