![]() An early revenue stream, a crowdsourced translation service, was replaced by a Duolingo English Test certification program, advertising, and subscription. The founders considered creating Duolingo as a nonprofit organization, but Von Ahn judged this model unsustainable. The project was originally sponsored by Von Ahn's MacArthur fellowship and a National Science Foundation grant. Hacker (co-founder and current CTO of Duolingo) believed that "free education will really change the world" and wanted to provide an accessible means for doing so. A driving motivation was Von Ahn's upbringing in Guatemala, where he saw how expensive it was for people in his community to learn English. Von Ahn had sold his second company, reCAPTCHA, to Google and, with Hacker, wanted to work on a project related to education. The idea for Duolingo originated in 2009 by Carnegie Mellon University professor Luis von Ahn and his Swiss-born post-graduate student Severin Hacker. A systematic review of research from 2012 to 2020 concluded that there comparatively few studies on the efficacy of Duolingo for language learning, but identified several studies that had found relatively high user satisfaction and enjoyment and positive perceptions of the app as helpful. ![]() The company uses a freemium model, with its optional premium service, Super Duolingo, being ad-free and offering more features.Īs of February 2023, Duolingo was the most popular language learning app worldwide based on monthly downloads, with almost 13.4 million users downloading the app that month. Other services include the Duolingo English Test certification program Duolingo ABC, a literacy app for children and Duolingo Math, an elementary-level math app. Language and mathematics courses and tests.Ģ7 November 2011 11 years ago ( ) (private beta)ġ9 June 2012 11 years ago ( ) (public release)ĭuolingo ( / ˌ dj uː oʊ ˈ l ɪ ŋ ɡ oʊ/ DEW-oh- LING-goh) is an American educational technology company that produces learning apps and provides language certification.ĭuolingo offers courses on over 40 languages, from popular languages such as English, French, and Spanish to less commonly studied languages such as Welsh, Irish and Swahili. Online education, Professional certificationĭuolingo, Duolingo Math, Duolingo ABC, Duolingo English Test
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