Duolingo vs Rosetta Stone

Duolingo and Rosetta Stone are both American language learning platforms. They support dozens of languages, provide exercises for understanding, reading, writing and pronunciation with progressively more difficult levels. Both offer paid subscription with advanced features.

However, Duolingo (founded in 2011) is a platform with a free basic version (with ads). The app extensively uses gamification (points, badges, daily "streaks") and is experimenting with AI-powered hints. Learning is structured around short 5-10 minute lessons/stages and you can also participate in the community for motivation. At the end of the course, you can take the Duolingo English Test to get the formal certificate.

Rosetta Stone (1992) is a more old-school academic platform focused on full language immersion. Its app uses visual associations and repetition to memorize words. The service is often used in schools, universities and companies. Rosetta Stone certificate is generally perceived as more "official" than the Duolingo English Test.