Because duolingo is designed for addiction (that's how they make money), not actual learning (learning would mean you'd stop using the thing, no good for stakeholders).
There is no sole app that makes you go from 0 to C2, but there are infinitely superior tools that actually make you learn, and not the self-complacent pretend-like-learning pastime that duo is.
For a start, almost every other app succeeds at not treating you like a toddler and not resorting to emotional manipulation.
There is no sole app that makes you go from 0 to C2, but there are infinitely superior tools that actually make you learn, and not the self-complacent pretend-like-learning pastime that duo is.
For a start, almost every other app succeeds at not treating you like a toddler and not resorting to emotional manipulation.