Over $1B in Bookings: Why Duolingo Still Wants More Free Users

The first important distinction is accounting. Duolingo defines bookings as the amount it expects to receive from transactions during the period. Subscription revenue is recognized over the life of a subscription, most of which lasts twelve months. That is why bookings can move ahead of revenue without being extra profit.²

The $1 billion milestone was bookings, not revenue

The difference is most visible in subscriptions. Duolingo recorded $996.3 million of subscription bookings but $873.4 million of subscription revenue in 2025. The company explains that subscription revenue is generally recognized ratably over the subscription term, so cash-related demand signals and accounting revenue do not have to land in the same period.²

That makes the February 2026 strategy statement more notable. The company was not choosing user growth because it had failed to monetize. It was making the choice after a year in which subscription bookings rose 36% and total revenue rose 39%.²

Why give more attention to people who do not pay?

Duolingo said it would improve the free learner experience to strengthen word of mouth and feed growth engines such as chess, math and music. In a freemium business, the free product is not merely a preview page. It is the large surface on which people build a habit, recommend the product and eventually encounter paid features.¹

The logic is a longer funnel: make the product useful to more people, keep more of them engaged, then give some of that audience reasons to pay. That does not guarantee more revenue. It explains why maximizing this quarter’s monetization and maximizing the long-term pool of engaged users can point in different directions.

The trade is easier to see beside Spotify’s subscription business. Spotify’s headline Premium count describes an established paid relationship. Duolingo’s strategy puts additional weight on widening and improving the free experience that can precede such a relationship.

The free audience is also part of Duolingo’s economics

Duolingo’s 2025 filing shows that subscriptions generated $873.4 million of revenue. Other revenue was $164.1 million, including advertising, the Duolingo English Test and in-app purchases. Advertising revenue rose as daily active users increased and more ads were served, according to the filing. Free usage can therefore support monetization even when a learner does not become a subscriber.²

That does not make every free learner equally valuable, or mean the company should maximize ads. Duolingo’s stated 2026 plan emphasized teaching and user growth. A free-product decision can affect word of mouth, retention, advertising opportunities and the pool of future subscribers at the same time.

Q2 2026 gave management an early user-growth signal

In August 2026, Duolingo said daily active users grew 23% year over year in Q2, an acceleration from Q1. Management said the results reinforced its strategy to improve the product and prioritize user growth. That is a company interpretation of an early operating result, not proof that the strategy will maximize long-term profit.³

The useful thing to watch next is whether user growth, paid relationships and revenue continue to move together over a longer period. A quarter of faster daily-user growth is encouraging for the stated goal. It does not settle whether slower near-term monetization produces a better business over several years.

A freemium business has two jobs

That balance is why the $1 billion bookings milestone does not end the growth question. Duolingo had already shown it could convert a large audience into substantial revenue. Its next bet is that serving more people well at the free layer can make the paid business larger later.

The owl’s most important customer may therefore be someone who has not paid yet. Not because free users are automatically profitable, but because in a freemium model they are the population from which attention, habit, word of mouth and future paid relationships can grow.