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.

From version Khan Academy 7.5.2:

∙ Bug fixes and performance improvements.

All versions
Khan Academy 7.5.2


Uploaded:June 7, 2022 at 6:32PM UTC

File size:15.27 MB


Khan Academy 7.5.1


Uploaded:May 6, 2022 at 5:30AM UTC

File size:15.27 MB


Khan Academy 7.5.0
April 21, 2022


Uploaded:April 21, 2022 at 9:11PM UTC

File size:40.7 MB


Khan Academy 7.4.0
December 14, 2021


Uploaded:December 14, 2021 at 4:40PM UTC

File size:14.74 MB


Khan Academy 7.3.3
October 21, 2021


Uploaded:October 21, 2021 at 2:03PM UTC

File size:21.13 MB


Khan Academy 7.3.2


Uploaded:May 8, 2021 at 12:16AM UTC

File size:21.02 MB


Khan Academy 7.3.1


Uploaded:April 21, 2021 at 1:18AM UTC

File size:21.02 MB


Khan Academy 7.2.0
December 16, 2020


Uploaded:December 16, 2020 at 10:52PM UTC

File size:22.34 MB


Khan Academy 7.1.0
October 10, 2020


Uploaded:October 10, 2020 at 1:19AM UTC

File size:22.08 MB


Khan Academy 7.0.2


Uploaded:July 20, 2020 at 8:52PM UTC

File size:24.23 MB