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 4.7.4

We’ve fixed a bug that caused the app to crash in certain locales.

Ratings and Reviews

4 out of 5

725 Ratings

725 Ratings

Editors’ Notes

Learn almost anything.

Good, but I’m missing a few things.

Ana Bananie

Khan Academy is a superb learning resource, whether you’re a young person still in school, a young adult in college, or just someone who’s looking to brush up on specific subjects. I enjoy using it, however, there are some things that can be added, taken away, and improved upon:

1) Add the ability to view unit and subject progression within the app. This option is available on the web version of KA, and it really motivates me to complete lessons! However, I cannot view my progress within the iOS app, which represses my excitement and causes me to not use it as often, which is unfortunate.

2) Allow the user to make all videos watched if we’ve reached 100% on units! While the videos are helpful when I’m confused about a specific topic, most of the time, I already understand the concepts explained in the video, so sitting through a drawn out video stifles the momentum I build.

3) Sometimes when I finish a unit, I do forget some of the information given, so it’d be nice to be reminded to review important concepts when KA recognizes I haven’t taken the initiative to review on my own.

Besides that, I really enjoy using Khan Academy as a whole, and with the changes I suggested, I believe it could become an even better and more intuitive learning resource.

Developer Response

Hey Ana,

We’re always working to add features that improve our App, and we love hearing ideas from our community. It would also be helpful if you mentioned them in our discussion section where they can be voted and commented on by other Khan Academy members!

Great material


This app is perfect even if your teachers do not use Khan academy, considering most courses like Biology still follow the common curriculum. Some of my classes my teachers will only touch on a subject and not thoroughly go into it (which did some reason I need to have in order to understand even the basics), which Khan academy helps with. Usually my Biology teacher is surprised with how much more I know, just from watching 12 minute videos. Often if I do not know a certain part of my chapter, I can find a video on it on Khan Academy which really helps.

SAT prep is great too! It pairs with your PSAT grades allowing you to touch on what you have the toughest time with.


Khan Academy
173.2 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+
© 2017 Khan Academy


  • Family Sharing

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

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