Khan Academy Education
Khan Academy is a education app by Khan Academy earning an estimated < $5k/mo on the App Store with 200k installs a month. Below are its 6 current App Store screenshots, localized in 7 languages.
Khan Academy generates an estimated < $5k per month in App Store revenue, from around 200k downloads a month. Its listing holds a 4.6-star rating across 109,766 ratings. The app has been on the App Store since 2012. Figures are monthly estimates of worldwide App Store performance.
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 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 personalized learning library is available to you, for free. - Learn anything, for free: Thousands of interactive exercises, videos, and articles at your fingertips.
From the App Store listing.