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, or NCLEX-RN. 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, humanities (art history, civics, finance), and more!

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 6.1.0

- Introducing support for German!
- Introducing support for Polish!
- Bug fixes and performance improvements.

Ratings and Reviews

4.0 out of 5
3.3K Ratings

3.3K Ratings

rslitman ,

Looking for a Developer Response

Pretty good app. I am giving it five stars, even though a recent update put everything in deeper layers. I used to be able to see every video, article, and practice exercise for a course, plus its mission if it has one, on the same screen. Now I have to dig deeper. Please return an expanded view to us! Also, we no longer see our consecutive days streak.

The iPad app is missing a few things found in the web version, in addition to the consecutive days streak, but it is quite adequate for the learning experience.

The most maddening thing is that when you roll out a new version with a major change like this, you still say “Bug fixes and performance enhancements.” Please give this review a Developer Response and let us know that you will {in the future/in future} be detailed with your updates when something major like the whole interface changes. Also, please let us know why the consecutive days counter (more motivating to me than energy points and about as motivating as the badges) was removed and if there’s a chance we can get it back. Thanks!

Damascus Skylar ,

One star. Trying to get a major flaw fixed

First off I absolutely love the service Khan Academy provides. It is truly an education that fully takes advantage of modern technology. That said, there are some big issues so I’m submitting one star so that they can be fixed soon.
The app has not been optimized for iPad Pro. It simply scales from the normal iPad size so everything is pixelated. It’s not terrible but very distracting. Also multitasking would be nice. Please fix this issue.
Please add an undo button to the sketch pad.
Please please please update the home screen so that users can jump right back into whatever they are focusing on in the program. The current screen is good for an overall view of all content on Khan Academy but not for the welcome/home screen. Please change it to where it shows recent missions, bookmarks and selected missions/courses. Also the slides at the top are irrelevant to me and are never updated so please either have them update based on what’s popular, things I do or just randomly or better get rid of it and take advantage of all that space for other things.
Thank you for the consideration and all the hard work. I’ll be sure to change my rating when these issues are addressed (they don’t have to be with the solutions I recommended just as long as the issues and ui are made better).

Developer Response ,

Hi there!

Thank you so much for taking the time to provide feedback on your experience with the Khan Academy App and for wanting to help us improve!

We'd love to hear your feedback in detail in our discussion section on the site, there it can be voted and commented on by other Khan Academy members with whom this may resonate with and get more exposure.

Please access this URL:

Warm Regards,

renegade3115 ,

Problems with progress

I love the new layout and of course I love Kahn academy. Which is why I gave it three stars. But I’ve gone through course reviews and challenges and keep having to redo because there’s an error saving an exercise. I just tried taking the course challenge and got through all the problems but the last I got an error. So I re-entered the challenge only to find that the progress I’d made on the 29 problems up to the last had also disappeared and I was being required to take the entire challenge of 30 problems over again. As I’d already spent my allotted time for Kahn for the day, I’ll have to come back tomorrow and start again. To be sure this is just a review course for me so in the grand scheme of things I could proceed to the more advanced course without problem, but I just so like seeing that 100% on every course.

UPDATE: after the latest update, I’ve gotten through challenges and practice without an app error and my progress is saved, so as of now, anyway, I’m quite pleased with the app.

Developer Response ,

Hi there! Thank you for taking out the time to review the app :) I would like to inform you that we have released version 6.0.3 of the app, if after updating the app you still experience any issues, please reach out to our support team.


Khan Academy
78.8 MB

Requires iOS 9.0 or later. Compatible with iPhone, iPad, and iPod touch.


English, French, German, Indonesian, Norwegian Bokmål, Polish, Portuguese, Spanish, Turkish

Age Rating
Rated 4+
© 2019 Khan Academy


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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