hm... this is actually a really good information. I have never heard of the application called Duo lingo.
Most of the time Google Translate is horrible. I usually try to look translate back to see if it goes back to what I write.

Google itself has a long way to go to learn from the humans how grammar is done.

So far for Apple users, they promote iTranslate. I might look into that, but this app sure does appeal since it is free.

upvoted