Isn't the Duolingo app designed for children? It sure felt so. I mean it's not like adults can't use it, but from the UI/UX of it it did not seem they are targe

Isn't the Duolingo app designed for children? It sure felt so. I mean it's not like adults can't use it, but from the UI/UX of it it did not seem they are targetting adults. Last I tried it was few weeks ago.