This site does not allow itself to be embedded. You can still read it on the original site — the toolbar below keeps your place in the directory.
A collection of the tricks Duolingo uses to keep you engaged and returning to the app.
This site does not allow itself to be embedded. You can still read it on the original site — the toolbar below keeps your place in the directory.
A collection of the tricks Duolingo uses to keep you engaged and returning to the app.
Comments
Nothing yet. Say the first thing.
Sign in to join the conversation.