Earlier this year in April, Duo looked a little ‘sad and tired’ with ... latest version of the Duolingo app downloaded, they ...

At least it did until, in a masterstroke of shock marketing, Duolingo “killed” its own mascot earlier this month. The campaign, which began with a simple app icon change and rapidly escalated ...

In an elaborate marketing campaign this month, Duolingo seemingly killed its viral green owl mascot in every country but one. "Duo, our owl, faked his death in every single market that we had ...

The app’s icon has also changed to the dead-looking owl, but within the app itself he appears to be alive and well. Duolingo told CNN in an email that it planned to reveal more on social media ...

The nagging goes beyond email subject lines and push notifications; inactive users might look down at their phones to find that the Duolingo app icon suddenly depicts a sadder and older version of ...