Duolingo is public, listed as DUOL on NASDAQ, in Education and credentials.
What it sells: language app, Duolingo ABC, Duolingo Math.
In the language of this map it serves 2 solutions — Educational toys and learning apps and Lifelong learning and senior education — which between them relieve 2 human frictions.
Its neighbourhood
Everything this entry connects to directly. Click any point to follow it.
Sells
Human frictions it ultimately relieves
Reached through the solutions above, never directly.