Clue 1 · The Basics
U.S. technology company · mid-cap · listed on Nasdaq · headquartered in Pittsburgh, Pennsylvania.
Clue 2 · The Numbers
Annual revenue is roughly $500 million, it has over 500 million registered users, yet it only recently started turning a consistent profit — growth always came first.
Clue 3 · The History
Founded in 2011 by a Carnegie Mellon professor who also co-invented CAPTCHA, originally as a way to crowdsource translation while teaching people languages for free.
Clue 4 · The Secret
The free app is beloved, but the real money comes from a premium subscription tier and a suite of English proficiency tests used by universities worldwide.
Clue 5 · The Lore
Its green owl mascot became a full-blown internet meme — mock-threatening users to finish their daily lessons or face vague, increasingly unhinged consequences.
Clue 6 · The Giveaway
You've ignored its streak reminder notifications more than you'd like to admit — and somewhere, a passive-aggressive cartoon owl named Duo is judging you for it.