Review Duolingo App for English Second Language (ESL). the app can be found in g

Review Duolingo App for English Second Language (ESL). the app can be found in google play. Provide bullet point steps for a class demonstration about the App.
Answer the following questions: Why do you like it? How can it be useful in a classroom? What are benefits to students? What are challenges for teachers? what are the strength and weakness of the app.