Duolingo, Inc. (Duolingo) is a technology company. The Company provides a science-based language learning platform. The Company's platform enables users to learn languages online. Duolingo offers approximately 97 courses in 40 languages, and is available on iOS, Android, and Web at www.duolingo.com. The Company's products include Duolingo for Schools, Duolingo English Test, Duolingo ABC, Duolingo Events, Duolingo podcasts, stories and dictionaries. Duolingo for Schools is a free web-based tool that makes it easier for teachers to use its platform in a structured learning environment. Duolingo English Test is an online English proficiency assessment. Duolingo ABC is a free application that teaches literacy skills to children's ageing three to six. Duolingo Events are online gatherings that bring together language learners from around the world for fun. Duolingo podcasts help develop listening comprehension skills by learners through true-life stories from around the world.