Luis von Ahn, he co-founder of gamified learning-language app, Duolingo, will be joining us at TechCrunch Disrupt 2021 this September 21-23 to talk about the making of his edtech unicorn. The pre-IPO company started as a grad school project, and over the years has become a behemoth enjoyed by more than 500 million users.

• How von Ahn leveraged crowdsourced translation to scale the Duolingo app
• How the pandemic impacted Duolingo's business and the broader edtech market

• The inspiration behind the iconic -- and often sassy -- green owl, Duo

• What's ahead for Duolingo's business

Von Ahn first presented Duolingo on the Disrupt stage nine years ago, with a website and goal to teach 100 million people a new language. Now, nearly a decade later, he’ll be coming back to explain what happened next. He doesn’t hold back — so you don’t want to miss this.