Can apps really make you fluent in another language?

Can apps really make you fluent in another language? A green owl can nudge you to practice, but it doesn't replace talking to a person. More information Adding us as a Preferred Source in Google by using this link indicates that you would like to see more of our content in Google News results. Carnegie Mellon engineers Luis von Ahn and Severin Hacker founded Duolingo in 2011. We may earn revenue from the products available on this page and participate in affiliate programs.