Khan Academy allows you to learn almost anything for free.

In our iPhone app:
- You can learn anything – for free: Over 10,000 videos and explanations at your fingertips in math, science, economics, history, and much, much more
- Sharpen your skills: over 40,000 interactive Common Core aligned practice questions are included with instant feedback and step-by-step hints. Follow along with what you’re learning in school or practice at your own pace
- Quickly find what you need: Redesigned navigation and search make it faster to find what you want
- Keep learning even when you’re offline: Bookmark your favorite content to “Your List” for easy access, and download it to keep learning even when you’re not connected to the internet.
- Pick up where you left off: Your learning syncs between your iPhone and, so your progress is always up-to-date

In our iPad app, you can also:
- Flex your muscles: the app adjusts to give you interactive exercise recommendations that are tailored just for you through the world of math.
- Show your work: the app harnesses the power of writing down your thoughts as you problem-solve with a beautiful, expansive scratchpad. Once you have your answer, just write it in, and we’ll recognize your handwriting (powered by MyScript)!

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, and even the humanities with playlists on art history, civics, finance, and more.

Spend an afternoon brushing up on statistics. Discover how the Krebs cycle works. Learn about the fundamentals of music notation. Prepare for the upcoming SAT, GMAT, or MCAT. Or, if you’re feeling particularly adventurous, learn how fire stick farming changed the landscape of Australia.

It doesn't matter if you are a student, teacher, home-schooler, principal, adult returning to the classroom after 20 years, or a friendly alien just trying to get a leg up in earthly biology—Khan Academy's materials and resources are available to you completely free of charge.

Head over to to learn more."Khan Academy allows you to learn almost anything for free.

What's New

Version 4.11.0

Bug fixes and performance improvements.

Ratings and Reviews

4.3 out of 5

89 Ratings

89 Ratings

Editors' Notes

Sharpen your skills with interactive questions and videos.

Focused on US students!!


Of course the priority must be the American students as I assume that your users are predominately American. However, it would be great if it included some British exam preparation (like GCSEs and A levels) instead of JUST American ones. To me, and other British students, the test prep section is useless, unless we are studying abroad.
I have the same thoughts about some of the arts and humanities. They mostly include the US and Europe but nothing on the UK or England (and we have strangely interesting history!)
Besides that, the rest of it is very helpful and I recommend it to other students who are struggling in certain areas and subjects.

Music not useable for iPad Pro


When I try watching most of the videos in Masterpieces Old and New in the Music topic using my iPad Pro, the video works fine for about 2 or 3 mins, but soon becomes pixelated and impossible to watch. I've tried watching other videos (like the chemistry and history videos) and they work fine. So the issue seems to be affecting only the music videos and only on iPad. I’ve reported this to the developer months ago, and they said that some features of the app aren’t working as intended and they are working to resolve them. It's such a shame because they are ideal videos I could be using in my teaching.

Developer Response

Hey there!

Sorry for any trouble that might’ve caused.

First, try a few basics such as logging out and back in, or uninstalling/reinstalling. If the issue persists, please submit a support ticket in our Help Center:

Thank you for your interest in helping to improve Khan Academy!


Khan Academy
180.3 MB
Requires iOS 8.0 or later. Compatible with iPhone, iPad and iPod touch.
English, French, Norwegian Bokmål, Portuguese, Spanish, Turkish
Age Rating
Rated 4+
© 2018 Khan Academy


  • Family Sharing

    Up to six family members will be able to use this app with Family Sharing enabled.

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