Duolingo posts about US$1B revenue and ~100M MAUs, reporting roughly 39% year‑over‑growth

Duolingo is no longer just a cute green owl app. It is a scaled consumer subscription business with real profits, real cash flow, and a user base that now looks more like a social platform than a niche education product. But the story people are passing around right now mashes together a few different reporting periods. The core point is still true — Duolingo is big and growing fast. The cleaner version is that its latest full-year reported revenue was $748.0 million for 2024, while the oft-cited 39% growth number came from Q4 revenue growth, not the full-year figure. ### What did Duolingo actually report? For the quarter and year ended December 31, 2024, Duolingo posted Q4 revenue of $209.6 million, up 39% year over year, and full-year revenue of $748.0 million, up 41%. It also reported $271.6 million in Q4 bookings and $870.6 million in full-year bookings. That matters because bookings are the cleaner read on demand for a subscription business. ### Where does the “100 million users” line come from? From monthly active users — and the actual reported number was even higher. Duolingo ended Q4 2024 at 116.7 million MAUs, up 32% year over year, and 40.5 million daily active users, up 51%. That DAU number is the sleeper metric here. Lots of apps can get installs. Fewer can get tens of millions of people to come back every day for something that feels like homework. ### Is this growth turning into paying customers? Yes — and that is the part investors care about most. Paid subscribers reached 9.5 million at year-end 2024, up 43% from a year earlier. Paid subscriber penetration was 8.8% of trailing-twelve-month MAUs. That may sound low, but for a freemium app it is pretty strong. Basically, Duolingo can keep the top of the funnel huge and still convert a meaningful slice into subscriptions. ### Is it profitable, or just growing? It is profitable. Duolingo reported $88.6 million in net income for 2024 and $191.9 million in adjusted EBITDA, with a 25.7% adjusted EBITDA margin. Free cash flow was also strong in Q4. So this is not a “growth at any cost” story anymore. The business is showing the classic software pattern investors want — user growth, subscription growth, then operating leverage. ### So why does the stock still feel broken? Because the stock market is grading Duolingo on expectations, not vibes. DUOL closed at $110.10 on April 30, 2026. That is nowhere near the stock’s all-time high close of $540.68 on May 14, 2025. So even if the business kept compounding, the multiple investors were once willing to pay has collapsed. That is a valuation reset, not a verdict that the product stopped working. ### What are investors waiting to see now? More proof that Duolingo can keep monetizing beyond the core language app without stalling engagement. Management has pointed to products like Duolingo Max and broader product improvements as growth drivers. The catch is that once a company is already this large, investors stop rewarding “great app” and start demanding clearer evidence of durable pricing power, subscriber expansion, and guidance that keeps outrunning the bar. ### Why does the mixed-up $1 billion claim keep spreading? Because it is close to a later-period number, but not the latest full-year figure in the filing tied to 2024 results. The company’s official FY 2024 revenue was $748.0 million. If someone says “Duolingo hit about $1 billion in revenue,” they are blending in later information or non-primary summaries. But the exact billion-dollar milestone depends on which period you mean. ### Bottom line The business story is strong. The stock story is shakier. Duolingo has proved it can attract huge audiences and turn a growing share of them into subscribers. What it has not proved — at least to the market’s satisfaction — is that this growth deserves the kind of premium valuation investors once gave it.