Duolingo, Inc.

of revenue or 38 to 44 percent year-over-year growth and an adjusted EBITDA loss of 3.5 to 6.5 million dollars. For the four-year 2021, we are raising our guidance on bookings to 282.5 to 285.5 million dollars of bookings or 49 to 50 percent year-over-year growth. For revenue and adjusted EBITDA, we are guiding to $244 to $247 million of revenue, or 51% to 53% year-over-year growth, and an adjusted EBITDA loss of $5 million to $8 million. Before I wrap up, I just want to reiterate what Luis mentioned earlier, that there is a considerable seasonality to our business. We expect to see our user metrics fluctuate throughout the year, especially around holidays and associated marketing campaigns, and our guidance reflects this. As we get into the busy holiday season, we anticipate seeing relatively flat user activity in November and early December, followed by a spike coming from our year in review and especially our New Year's resolutions of our users. This leads to an increase in usage at the end of December that goes through January. We look forward to providing our 2022 guidance on our fourth quarter earnings call in early March. And with that, I'll turn it back over to Luis for closing comments.

Thanks, Matt. To wrap it up, I would like to thank our incredibly talented team that drives our mission forward every day. I started Duolingo with Severin because we believe everybody in the world should have access to high-quality education. Every employee at Duolingo, whether they're making people want to learn more or helping the rest of the organization succeed, they contribute to a world where education is available to millions of people. Of course, we're not done yet, but with continued hard work, we will make a huge dent in this goal. I look forward to reporting on our progress in the future.

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