Duolingo's (DUOL) CEO Luis von Ahn on Q3 2021 Results - Earnings Call TranscriptSeeking Alpha • 11/11/21
This Popular App Is Totally Free. Here's Why The Company Might Still Be a Good InvestmentThe Motley Fool • 10/23/21
Bumble, Duolingo lead rally in shares of app developers after Google slashes subscription feesCNBC • 10/21/21
Duolingo to Announce Third Quarter 2021 Results on Wednesday, November 10, 2021GlobeNewsWire • 10/14/21