They have users... but the tool(app), other than being really cute and well made, is super basic...
You can't expect to be fluent enough in a language JUST with Duolingo, at most you will be able to read a few sentences and spit out a few basic sentences and words.
Is that enough? Definitely not. Not for me at least.
They basically give you the 'hello world' of a language.
I speak 5 languages (learned through school and life choices) but when I tried to learn a 6th on Duolingo I felt like the experience was not good enough for me. A tutor or a class would probably be mandatory and using Duolingo just for re-affirming some basic concepts would be a nice to have, like a companion app..but they have to be able to let teachers create their own lessons.
Is that enough? Definitely not. Not for me at least. They basically give you the 'hello world' of a language.
I speak 5 languages (learned through school and life choices) but when I tried to learn a 6th on Duolingo I felt like the experience was not good enough for me. A tutor or a class would probably be mandatory and using Duolingo just for re-affirming some basic concepts would be a nice to have, like a companion app..but they have to be able to let teachers create their own lessons.