3 Things Investors Must Watch in Duolingo's Second-Quarter Earnings

Duolingo (NASDAQ: DUOL) enters its second-quarter earnings report, to be released on Aug. 5, with something to prove. The business itself remains strong. In the first quarter, revenue jumped 27% year over year to $292 million, paid subscribers grew 21% to 12.5 million, and adjusted EBITDA increased 33% to $83.4 million.

But those numbers don't tell the whole story. Duolingo made a major strategic shift as it entered 2026. Instead of maximizing near-term monetization, management is investing more aggressively in the free experience, AI-powered learning, and other initiatives designed to drive long-term user growth.

Q2 should give investors an early indication of whether that strategy is working. Here are three things worth watching.

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Is user growth holding up?

This is arguably the most important number in Duolingo's upcoming report. Daily active users (DAUs) increased 21% in Q1 to 57 million, a deceleration from 49% growth a year earlier. Some deceleration was inevitable as Duolingo grew and management's earlier focus on improving monetization shifted.

Still, management pivoted by the end of 2025, making user growth its priority in the near future. The company wants to reach 100 million DAUs by 2028, nearly double Q1's level. Getting there requires Duolingo to sustain strong growth even as its existing user base becomes much larger.

That's why investors shouldn't simply ask whether DAUs increased. They should ask whether Duolingo remains on a credible path toward 100 million. If DAU growth remains at or above 20%, the strategy appears on track. A meaningful slowdown, however, would make that 2028 target harder to reach.

What is Duolingo sacrificing for that growth?

There's no free lunch. Duolingo is deliberately making parts of its product more generous to improve the free learner experience. It's also expanding AI-powered features, which can improve learning but entail additional computing costs.

Management already warned investors about the trade-off. While Q1 gross margin actually improved 190 basis points to 73%, management expects adjusted EBITDA margins for 2026 to come under pressure, down from 30% to below 26%. At the same time, bookings are expected to grow at just 11% in 2026.

That makes Q2 a useful test of Duolingo's balancing act. Investors shouldn't panic if margins or bookings growth soften. That's partly the plan. What matters is whether Duolingo is getting enough additional engagement and user growth in return. Sacrificing some profitability for faster growth can create enormous long-term value. Sacrificing profitability without accelerating growth cannot.

What does management say about the rest of 2026?

Finally, don't stop at the quarterly numbers. Listen to what management has to say for the rest of the year. Duolingo said after Q1 that it was still early in executing its 2026 strategy and that results were tracking largely as expected. That makes any change in tone during Q2 particularly important.

Does management remain confident in its 100 million DAU target? Is investment in the free experience producing the desired results? Are AI costs developing as expected? And does the company maintain or change its financial outlook?

Those answers could matter more than whether Duolingo beats Wall Street's quarterly revenue estimate by a few million dollars, since they will indicate whether the company's efforts are bearing fruit.

What does it mean for investors?

Duolingo's Q2 earnings aren't simply another report card. They're an early test of one of the biggest strategic decisions the company has made since going public. Management is effectively asking investors to accept slower near-term monetization in exchange for a larger user base and potentially greater long-term earnings power. That's a reasonable trade-off, but only if it works.

So when Duolingo reports Q2, forget about whether earnings beat expectations by a penny. Watch the users. Watch the cost of acquiring that growth. And, above all, listen to what management says about what comes next. Those three things will tell investors far more about where Duolingo is heading than a single quarter's headline numbers ever could.

Lawrence Nga has no position in any of the stocks mentioned. The Motley Fool has positions in and recommends Duolingo. The Motley Fool has a disclosure policy.