Khan Academy

Khan Academy

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.

Ratings and reviews

I use this app quite a lot. I study in grade 6 and use my dad's phone and this app does quite the needful. Sometimes it misses on some curriculums, often going beyond what is expected to do in the grade but I find it amusing and compelling. They have this videos to help you learn the topic. The language is pretty simple and the drawings help and you can catch on. Plus it has these badges and score points which motivates you to do more. I wished they had english too. But still good.

Love Khan Academy, I've been using it since 2009. Helpful albeit slightly repetitive lessons. I have one big issue with the app: the scratchpad. It's too small to do anything but the simplest questions so you'll need a pen and paper to get much use out of the app. One possible fix would be to make it zoomable so you can fit more of the equation on a phone screen.

Great app for kids and adults. The points system and graduated learning is genius: Too hard? Just go a grade lower until you've mastered it. Too easy? Just take the unit test to complete it and move on to a higher grade. I wish high school had used this approach...I might not have dropped out when things became too difficult! Thank you for making this free. ****For those of us who find videos boring, slow and hard to pay attention to....stop auto scroll on transcripts so we can read it faster.

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.