Watch thousands of educational videos and review your learning with the Crash Course App!

At Crash Course, we believe that high-quality educational content should be available to everyone for free. We produce courses that accompany high school and college-level classes ranging from the humanities to the sciences. On YouTube we have created a community of over 10 million subscribers that believe, like us, that learning should be fun, engaging, and thoughtful (and silly when appropriate).

This app is a portal to our thousands of videos online and a place to review your learning with supplemental flashcards and quizzes. Flashcard decks are currently available for all episodes of Anatomy & Physiology, Chemistry, and Organic Chemistry, and we'll be continually adding more content.

So please join our community of learners because you are the exception!

What’s New

Version 1.4

Fixed: * Bug causing answer images to not load properly.

Ratings and Reviews

4.9 out of 5
846 Ratings

846 Ratings

sncrisman ,

Favorite education app — for both school and home

This app is honestly beautifully made, and you can tell the developers spent a lot of time and effort into it. It’s intuitive and easy to use, both are things I absolutely adore.

I am still in school, and as you know, it is now completely online, and even if this app is only a few weeks old, whenever I don’t completely understand a topic, I don’t hesitate to come to Crash Course, and it never fails me.

Now, both of my parents are chemists, and they’ve always tried to get me into chemistry. They’ve given me their old college textbooks, sent me links to videos explaining chemistry basics, and even taught me science facts in the car, but I’ve never really learnt much from it, but then for the past two weeks I figured I’d actually put some effort into learning the subject, and surprisingly — it’s going well! The lessons are easy to follow, and when you put in the extra effort to make notes along the way, chemistry turns into something really easy to follow!

Singerchick109 ,

I wish I had this in high school

This app is both beautifully designed and staggeringly intuitive. Crash Course launched after I graduated from high school, but I used CC Literature & CC theater to keep on learning even though I didn’t take those classes in college. I was terrible at math & science in high school, and an app like this would’ve done wonders for my bio & chemistry grades. The material is so much easier to grasp in this format, and I don’t know if it’s because I’m older and learning because I want to, or if it’s because the material is presented in a way that actually holds my attention. Maybe both? In any case, this app is brilliant and wonderful and I’m happy that I have it so I can keep on learning. Thanks John, Hank, & the amazing Complexly team. Y’all crushed it.

The Angriest Teacher Ever ,

Worth the download

I’ve been a big fan of Crash Course for years. Many of my past teachers have used it to supplement lessons and I have relied on it to understand the material in other classes. I’m very glad that it’s made the transition to a full blown app with all of the trademark Crash Course animations, expressions, and fun attitude. The addition of ‘decks’ is a great add-on, although there are only a few courses that make use of it at this time. Highly recommend this app for bite-sized lessons on a multitude of topics. Great for students, teachers, or anyone who just wants to learn something new.


Complexly LLC
167.6 MB

Requires iOS 10.0 or later. Compatible with iPhone, iPad, and iPod touch.



Age Rating
Unrestricted Web Access
In-App Purchases
  1. Contribute $1.99 $1.99
  2. Contribute $4.99 $4.99


  • Family Sharing

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

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