How Duolingo expanded beyond languages
The expansion has been deliberate. Over the past couple of years Duolingo has added maths, music and, most recently, chess to the same app that teaches Spanish and French. The lessons follow the formula that made the company famous: short bursts, instant feedback, streaks, points and a gentle sense of guilt if you skip a day. The subject changes, but the habit-forming machinery stays the same.
Chief executive Luis von Ahn has described a simple test for what gets added. A new subject has to clear three bars: there must be large demand, it should offer some genuine societal benefit, and the team has to be internally motivated to build it. Languages obviously qualified. So, it turns out, did chess, a game with centuries of appeal and a low barrier to starting.
Why chess works for Duolingo
Chess has been the breakout hit. Duolingo says the chess course became its fastest-growing subject ever, reaching around 7 million daily users less than a year after launch. That is a remarkable start, and it validates the bet that the company’s teaching style can travel far beyond language. A game that can feel intimidating to beginners turns out to be a natural fit for bite-sized, no-pressure lessons.
| Duolingo subject | Status |
|---|---|
| Languages | Core business, dozens of courses |
| Chess | Fastest-growing subject, ~7m daily users |
| Maths | Growing, still early |
| Music | Growing, still early |
The wider point is what chess proves about the platform. If Duolingo can take a subject as old and as deep as chess and make tens of millions of people open the app for it, then the model is not really about language at all. It is about turning learning into a daily game, and that idea can stretch across a long list of subjects.
The owl was never really about Spanish. It was about getting you to come back tomorrow.
What is next for Duolingo
Von Ahn has been candid that growth will not be smooth in every subject. He has warned that maths and music are unlikely to leap forward in the near term, and the company is pouring effort into its free experience and into new artificial-intelligence features rather than chasing quick wins. That patience echoes the careful, model-first approach we have seen elsewhere in tech, from Microsoft’s enterprise AI tools to creative platforms like Canva.
The opportunity is large. If Duolingo becomes the default place people go to pick up a new skill, it stops being a language app competing with other language apps and becomes a consumer education brand in a class of its own. That is a far bigger prize, and chess has given the company the confidence that the leap is possible.
There are risks. Spreading across many subjects can dilute focus, and each new area means new content, new experts and new ways to keep people engaged. But with tens of millions of daily users already in the habit, Duolingo starts from a position most rivals would envy. You can see the company’s own roadmap on the Duolingo blog and try the courses at Duolingo.com, and you can follow the wider shift in learning across our education coverage. The green owl, it seems, is just getting started.
The business case
Behind the playful design sits a sharp business model. Duolingo makes most of its money from subscriptions and advertising, and the more subjects it offers, the more reasons a user has to keep the app open and, eventually, to pay. Chess players, maths learners and language students can all live inside one subscription, which raises the value of that subscription without a matching rise in cost.
The company has also been clear that it will spend to grow rather than squeeze every last dollar today. Duolingo has talked about investing in its free experience and in new artificial-intelligence features that make lessons feel more personal, even at the cost of some near-term revenue. That is a confident stance, and it only works because the user base keeps expanding and renewing.
Competition is real. Specialist apps exist for chess, for maths and for music, and some are excellent. But few have Duolingo‘s reach, its brand warmth or its mastery of the daily habit. The bet is that being good enough across many subjects, inside one familiar app people already love, beats being best in class at a single one. If that holds, the green owl could end up teaching the world a great deal more than verb conjugations.