Duolingo is a language learning platform provider that enables users to learn languages online. The company’s course platform covers speaking, listening, translation and multiple-choice questions, and provides scoring and improvement methods. In terms of actual user experience, the Duolingo language learning app is the world’s most popular way to learn languages. It currently develops three applications, namely Duolingo Math, Learn to Read - Duolingo ABC and Duolingo - Language Lessons. Of course, if you have a strong interest in language learning, then Duolingo - Language Lessons is definitely the best choice for you, taking your language level to a higher level.