Quizlet

Quizlet makes digital study tools that empower students to take control of their own learning. Quizlet has massive scale -- our website reaches more than 30 million uniques a month. Our apps are always among the top five in the free education sections of the iOS and Android app stores. That scale allows us to ship new educational experiences to a significant percentage of all U.S. students on a daily basis, which is something few other companies can say. Quizlet has been bootstrapped and profitable since it launched in 2007.