Premium
About Khan Academy 8.4.0
You can learn anything. For free.
Premium
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 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 khanacademy.org.
Khan Academy is a 501(c)(3) nonprofit organization, with the mission of providing a free, world-class education for anyone, anywhere.
Premium
Version:8.4.0
Uploaded:February 4, 2026 at 2:51AM UTC
File size:12.01 MB
Downloads:120
Version:8.3.1
Uploaded:February 4, 2026 at 2:51AM UTC
File size:15.10 MB
Downloads:673
Version:8.3.0
Uploaded:February 24, 2025 at 6:13PM UTC
File size:15.10 MB
Downloads:115
Version:8.2.0
Uploaded:August 14, 2024 at 7:04PM UTC
File size:14.74 MB
Downloads:425
Version:8.1.1
Uploaded:March 16, 2024 at 6:38PM UTC
File size:14.45 MB
Downloads:543
Version:8.0.0
Uploaded:December 3, 2023 at 8:37PM UTC
File size:15.21 MB
Downloads:430
Version:7.12.1
Uploaded:October 2, 2023 at 8:35PM UTC
File size:15.40 MB
Downloads:512
Version:7.12.0
Uploaded:September 11, 2023 at 4:26AM UTC
File size:15.46 MB
Downloads:87
Version:7.11.1
Uploaded:July 25, 2023 at 12:54AM UTC
File size:15.21 MB
Downloads:177
Version:7.10.1
Uploaded:June 16, 2023 at 8:16PM UTC
File size:15.11 MB
Downloads:228
