Planet Math

Planet Math takes you on a journey through math, from Kindergarten to College, with Zyro, the friendly little space explorer who makes every topic simple. The app is free, has no ads, needs no account and works even without an internet connection.

For every level you will find:

• clear lessons with definitions, step-by-step methods, worked examples and diagrams;

• practice problems sorted by difficulty (★ easy, ★★ medium, ★★★ hard);

• 10-question quizzes with instant feedback, Zyro's explanations and sound effects;

• a test for every chapter, scored out of 20 points, so you can check what you know;

• 10 interactive tools that explain the result: GCF and LCM, prime factors, fractions, percentages, proportions, mean and median, the Pythagorean theorem, linear equations, quadratic equations and a unit converter with US customary and metric units;

• Zyro's Challenge and the daily challenge: timed mental math with points, streaks and records.

14 levels are covered: Kindergarten, Grades 1 to 12 and College. Chapters range from numbers and operations to geometry, algebra, functions, probability and statistics, precalculus, calculus and linear algebra.

Your profile stays on your phone: nickname, avatar, points, records, daily streak, completed chapters and favorites. No account to create, no personal information requested. You can switch between English and French at any time with the flags.

Printable PDF worksheets and the Planet Math books are available on the website planete-maths.eu, which you can open from the app.