I would say its a great app to chat with strangers around the world. its kinda fun app
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Duolingo - Duolingo is a free language learning app for iOS, Windows and Android devices. The app makes learning a new language fun by breaking learning into small lessons where you can earn points and move up through the levels. Read more about Duolingo.
AHOI Live Video Chat - AHOI Live Video Chat app comes up with features to help you in setting up your profile by choosing your interests in order to start chatting with friends with the same interests.
Memrise - Learn a new language with games, humorous chatbots and over 30,000 native speaker videos.
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Busuu - Join the global language learning community, take language courses to practice reading, writing, listening and speaking and learn a new language. Learn English with busuu's .