The comparison between Spotify and Duolingo could not be more wrong.

Comparing Duolingo to Spotify fails for one simple reason.

Spotify is: press play, lean back, relax, consume.

Duolingo is: stand up, roll up your sleeves, be disciplined, and produce.

One is built around human convenience.

The other is built around human performance.

These are two completely different psychological pathways for distributing a product.

Antonio Linares