In June 2015, it announced that it had raised $45 million from a Series D funding round led by Google Capital, bringing its total funding to $83.3 million. At this time, it had 34 employees, and reported about 25 million registered users and 12.5 million active users it later reported a figure closer to 60 million users. In February 2014, Duolingo announced that it had raised $20 million from a Series C funding round led by Kleiner Caufield & Byers, with prior investors also participating. 1 free education app in the Google Play Store. By July 2013, it had grown to 5 million users and was rated the No. In November 2012, Duolingo released an iPhone app, followed by an Android app in May 2013, at which time Duolingo had around 3 million users. In September 2012, Duolingo announced that it had raised a further $15 million from a Series B funding round led by New Enterprise Associates, with participation from Union Square Ventures. It launched to the general public on June 19, 2012, at which point the waiting list had grown to around 500,000. Duolingo launched a private beta on November 27, 2011, and accumulated a waiting list of more than 300,000 people. In October 2011, Duolingo announced that it had raised $3.3 million from a Series A round of funding, led by Union Square Ventures, with participation from author Tim Ferriss and actor Ashton Kutcher's investing firm A-Grade Investments. 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. Subsequent studies have concluded that Duolingo is effective for language learning and the acquisition of vocabulary. A systematic review of research on Duolingo from 2012 to 2020 found comparatively few studies on the platform's efficacy for language learning, but identified several studies that had reported relatively high user satisfaction and enjoyment and positive perceptions of the app's effectiveness. 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 in the world 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 Duolingo Math, an elementary-level math app, and Duolingo Music, a music learning platform. 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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