Duolingo is described as 'Gamify language learning with Duolingo, offering over 30 languages for free. Practice vital skills with intelligent chatbots and community rewards' and is a very popular language learning tool in the education & reference category. There are more than 100 alternatives to Duolingo for a variety of platforms, including Web-based, iPhone, Android, iPad and Android Tablet apps. The best Duolingo alternative is Memrise, which is free. Other great apps like Duolingo are AnkiDroid, Busuu, LibreLingo and Lingvist.
NOT FREE, not at all the same