Khan Academy review

Khan Academy answers the question of the best free math learning tool for students past early elementary. The nonprofit puts its whole personalized learning library online for free: thousands of interactive exercises, videos and articles, with math running from arithmetic, pre-algebra and algebra through geometry, trigonometry, statistics, calculus, differential equations and linear algebra. Practice exercises, quizzes and tests give instant feedback and step-by-step hints, and a mastery system adjusts to the learner's current level. A free account syncs progress between the app and khanacademy.org, and videos can be downloaded for offline viewing. It ranks below Prodigy and Khan Academy Kids because it is a course more than a game, which some kids find less motivating, and because Khan Academy says parent tools, teacher tools and test prep are on the website rather than in the app. For homework help and catching up on a topic, it is hard to beat at no cost. We compared documented features and published prices only.

Who it is for

Middle school, high school and adult learners who want free math lessons and practice with instant feedback.

Price

Free: the full learning library is free, with an optional free account to sync progress.

You can learn anything. For free.
Quoted from the vendor pricing page on November 10, 2026.

Key features

• Math from arithmetic and pre-algebra to calculus, differential equations and linear algebra
• Practice exercises, quizzes and tests with instant feedback and step-by-step hints
• Mastery system tailored to the learner's current level
• Download videos to watch offline
• Progress syncs between the app and khanacademy.org with a free account

Strengths and weaknesses

• Strength: Free from basic arithmetic through college-level math
• Strength: Step-by-step hints help with homework topics
• Strength: Run by a 501(c)(3) nonprofit
• Weakness: More lessons and exercises than game
• Weakness: Some features such as parent and teacher tools are only on the website
• Weakness: Younger children are better served by Khan Academy Kids

Key facts

• Math coverage: Arithmetic to calculus, differential equations and linear algebra
• Publisher: Khan Academy, a 501(c)(3) nonprofit
• Offline: Bookmark and download content
• Account: Optional free account syncs progress

Where it ranks

Khan Academy is No. 3 in our Best Free Math Games verdict.