I love the product! There are a lot of people that are too shy to talk to others while learning a new language. This seems like a good way to start talking in a "secure" environment.

Also, you should add english language! It is being learned by 1 billion people as a second language and probably it would be a lot easier to make a great model in english.

If I were you, I would nail english language first and after that focus on adding more languages.

Anyway, great product!!!