Yes — on Google Play
Khan Academy has a Google Play listing.
App Store
On Google Play
Is Khan Academy on Android?
About Khan Academy
You can learn anything. For free. 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…
Khan Academy is listed on both the App Store and Google Play from Khan Academy, so you can install it on Android phones and tablets. The Play Store listing shows 10,000,000+ installs.