DUOL
T2Duolingo, Inc.
OverviewDuolingo, Inc. offers a popular language-learning app and website, providing courses in over 40 languages. The company is expanding into new subjects like math,
Duolingo, Inc. offers a popular language-learning app and website, providing courses in over 40 languages. The company is expanding into new subjects like math, music, and chess, leveraging AI to enhance the learning experience and user engagement. Primarily generating revenue from subscriptions, Duolingo aims to grow its global user base by improving its free offerings and diversifying monetization.
Bull / Bear DetailsDuolingo is strategically pivoting to prioritize aggressive daily active user (DAU) growth, targeting 100 million by 2028, by leveraging AI for enhanced learnin
Thesis
Duolingo is strategically pivoting to prioritize aggressive daily active user (DAU) growth, targeting 100 million by 2028, by leveraging AI for enhanced learning and expanding into new subjects like Math and Music. This long-term vision, supported by falling AI costs and a strong market position, is expected to redefine education despite short-term impacts on bookings and profitability. (Updated 2026-02-28)
Bull case
Duolingo is making a strategic pivot to reaccelerate DAU growth, targeting 100 million by 2028. This is driven by improving the free user experience and leveraging AI to enhance teaching quality, aiming to capture a massive market opportunity and redefine learning for the long term.
The company is successfully expanding its total addressable market through new subjects like Chess, which achieved 7 million DAUs in under a year, and Math, poised to become a leading tutor app. Low penetration in existing markets (e.g., 2% of internet users in the U.S.) indicates significant untapped user growth potential globally.
Accelerating AI advances and falling inference costs enable Duolingo to integrate advanced features like conversational practice (video call) into broader user tiers (Super), enhancing the learning experience and driving engagement. This proactive approach aims to teach more people better, securing a competitive edge.
Bear case
The strategic shift to prioritize user growth over immediate monetization will result in slower bookings growth (10-12% for 2026) and lower adjusted EBITDA margins (around 25% for 2026). R&D and sales & marketing spend are expected to outpace revenue growth, impacting short-term profitability.
The company is transitioning away from friction-based monetization, experimenting with new value-added features and alternative revenue streams. The success and timeline of this transition, including the impact of moving Max features to Super, remain uncertain and could affect average revenue per user (ARPU) and overall bookings.
Despite ambitious DAU targets, growth decelerated in 2025 and is expected to be about 20% year-over-year throughout 2026. Achieving the 100 million DAU goal by 2028 requires significant and sustained reacceleration, and the effectiveness of new product initiatives and marketing strategies is yet to be fully proven.
Bull / Bear Case
- Bear Case
- Duolingo's strategic shift to prioritize user growth over immediate monetization introduces significant near-term financial headwinds. The company forecasts slower bookings growth of 10-12% and lower adjusted EBITDA margins around 25% for 2026, with R&D and sales & marketing expenses outpacing revenue growth. This deliberate de-prioritization of short-term profitability, coupled with the uncertainty surrounding the effectiveness and timeline of new, non-friction monetization strategies, creates execution risk and could impact average revenue per user (ARPU). DAU growth decelerated in 2025 and is projected at 20% for 2026, requiring substantial reacceleration to meet the 2028 target. The stock has reacted negatively, trading near 52-week lows, reflecting investor concerns about the reduced near-term financial visibility and potential for rising AI costs to pressure gross margins.
- Bull Case
- Duolingo is executing a strategic pivot to aggressively reaccelerate Daily Active User (DAU) growth, targeting 100 million by 2028, by enhancing the free user experience and leveraging advanced AI. This includes integrating features like "video call with Lily" into broader tiers and developing Duolingo Math to be a leading tutor app, capitalizing on falling AI inference costs. The company boasts a dominant 85% share of language learning app DAUs and significant untapped market penetration globally. Expansion into new subjects like Chess, Math, and Music is broadening its total addressable market, with Chess already demonstrating rapid user adoption. Despite short-term financial impacts, this long-term vision aims to redefine education and build a significantly larger, more durable business, supported by a strong financial position and a $400 million share repurchase program.
- More Compelling & Why
- Bear. While the stock has fallen significantly, the estimated forward P/E for 2026 of 25.74 appears elevated given the explicit guidance for decelerated bookings growth and lower profitability in the near term. The strongest argument for the bear case is the considerable uncertainty surrounding the success and timeline of the strategic pivot, particularly the effectiveness of new monetization methods without friction. My view would flip to Bull if Duolingo demonstrates a clear, earlier-than-expected reacceleration in DAU growth that translates into improved bookings and margin expansion beyond 2026, justifying a higher forward multiple.
Key Factors
| Key Factor | Why It Matters | What To Watch | What It Signals | Where/How To Track | Free Alt Data | Paid Alt Data |
|---|---|---|---|---|---|---|
| User Growth in New Subjects (Math, Music, Chess) | Expansion into new subjects broadens Duolingo's total addressable market and diversifies its user base, contributing to the overall DAU growth target and long-term value. | Reported Daily Active Users (DAUs) for Chess, Math, and Music. Commentary on the rollout and user adoption of Duolingo Math and Music. Chess currently has about 7 million DAUs. | Bullish: Continued strong growth in Chess DAUs (e.g., exceeding 7 million and growing), positive user feedback and adoption for Duolingo Math and Music, and clear indications of progress towards becoming the "best tutor app for math" in 2026. Bearish: Stagnation or decline in new subject DAUs, or delays/poor reception for Math and Music launches. | Quarterly earnings reports and webcasts. Shareholder letters. | Google Trends: "Duolingo Chess", "Duolingo Math", "Duolingo Music" search volume. App store reviews for new subject apps. | Sensor Tower/App Annie: Downloads and active users for Duolingo Math/Music/Chess apps. |
| Product Enhancements (Advanced Content & Speaking Adventures) Rollout and User Engagement | These product enhancements are key initiatives to improve the free user experience and teaching quality, directly supporting the strategic shift to reaccelerate DAU growth and enhance user retention. | Timely rollout of "speaking adventures" by mid-2026 and advanced content (up to Duolingo score 129 for top 9 languages) within the next month or two. User engagement metrics (e.g., time spent, lesson completion) with these new features. | Bullish: On-time or early rollout of these features with positive user engagement and feedback, contributing to DAU growth and retention. Bearish: Delays in rollout, or low user engagement/negative feedback for the new features. | Company announcements, product updates, quarterly earnings calls (commentary on product development and user engagement). | App store reviews, social media discussions (Reddit, X) about new Duolingo features. | Sensor Tower/App Annie: User engagement metrics (e.g., session duration, feature usage) for Duolingo app. |
| Adjusted EBITDA Margin Performance | Duolingo is intentionally sacrificing short-term profitability for long-term user growth. Monitoring the adjusted EBITDA margin against guidance will indicate if investments are managed effectively and if the financial impact is within expected bounds. | Reported adjusted EBITDA margin for Q1 (guided to 25.5%), Q2 (expected to decline roughly 3 points sequentially), Q3, and Q4 2026 (expected to be highest margin quarter), compared to full-year guidance of around 25%. Growth rates of R&D and Sales & Marketing expenses relative to revenue growth. | Bullish: Adjusted EBITDA margins meet or exceed guidance, particularly the expected improvement in the back half of 2026, indicating effective investment management. Bearish: Adjusted EBITDA margins fall below guidance, especially in Q2 or the full year, suggesting higher-than-expected investment costs or lower returns. | Quarterly earnings reports and webcasts. Shareholder letters. | ||
| DAU Growth Rate | Duolingo is prioritizing user growth in 2026, expecting slower bookings and lower profitability. Reaccelerated DAU growth is crucial for long-term value and achieving the 2028 target of 100 million DAUs. | Year-over-year Daily Active User (DAU) growth rate. Management expects about 20% throughout 2026. Monitor for any deviation from this or early signs of acceleration towards the 2028 target of 100 million DAUs. | Bullish: DAU growth consistently above 20% year-over-year, or early indications of acceleration towards the 100 million DAU target by 2028. Bearish: DAU growth consistently below 20% year-over-year, or further deceleration. | Quarterly earnings reports and webcasts. Shareholder letters. | Google Trends: "Duolingo app download", "learn [language] Duolingo" search volume. App store download rankings. | Sensor Tower/App Annie: Duolingo app downloads, active users, engagement metrics. |
| Impact of Video Call in Super Duolingo on Bookings/ARPU and overall Monetization Strategy | This strategic shift aims to balance user growth with monetization by making premium features more accessible, potentially increasing Super Duolingo subscriptions and retention, but carries risks of cannibalizing Max or lowering overall ARPU. | Commentary on the results of A/B tests for video call in Super Duolingo. Changes in Super Duolingo subscriber numbers, retention rates, and average revenue per user (ARPU). Overall bookings growth, especially in Q2 and the second half of 2026 (FY26 guidance: 10-12% bookings growth). | Bullish: Increased Super Duolingo subscriptions and retention without significant cannibalization of Max, leading to overall bookings growth in line with or above guidance. Successful identification and implementation of new, non-friction monetization methods. Bearish: Significant cannibalization of Max subscribers, a decline in overall ARPU, or bookings growth below guidance due to this strategy. | Quarterly earnings reports and webcasts. Shareholder letters. | Social media sentiment (e.g., Reddit, X) regarding video call feature availability and subscription value. | Sensor Tower/App Annie: Subscription revenue trends for Super and Max tiers. Consumer transaction data for subscription purchases. |
Key Reported Metrics
| Metric | Why It Matters | Last Period |
|---|---|---|
| Bookings Growth | Bookings growth is a core top-line demand signal, indicating the overall health of the business and future revenue. The company expects slower bookings growth in the short term due to its strategic shift. | 24% |
| Adjusted EBITDA Margin | Adjusted EBITDA Margin reflects the company's profitability and efficiency. It is expected to be impacted by increased investments in user growth and AI features in 2026. | 29.8% |
| DAU Growth | Daily Active User (DAU) growth is Duolingo's top priority for 2026, as the company shifts to reaccelerate its user base. Sustained growth is crucial for long-term value and reaching the 100 million DAU target by 2028. | 30% |
Key QuestionsWill Duolingo's strategic pivot to prioritize DAU growth by reducing monetization friction and investing in new subjects show early signs of reaccelerating user
Will Duolingo's strategic pivot to prioritize DAU growth by reducing monetization friction and investing in new subjects show early signs of reaccelerating user growth in Q1, or will the market remain concerned about the immediate impact on bookings and profitability?
- Question 2
How will the A/B testing and initial rollout of AI-powered "video call" features to Super Duolingo impact the Max subscriber base, overall ARPU, and the company's Q1 bookings and adjusted EBITDA margin guidance?
- Question 3
Will the rapid user growth in new subjects like Chess, and the upcoming launch of Duolingo Math, contribute meaningfully to overall DAU reacceleration in the near term, or will their impact be slower to materialize than anticipated?
Transcript Tidbits
| About Expanding Eligible Market | About Competition | About The Broader Industry | Where Things Are Headed | Updates On Theme | Broader Themes Emerging | Bullish-Leaning Quotes (Short) | Bearish-Leaning Quotes (Short) | Hiring |
|---|---|---|---|---|---|---|---|---|
| Duolingo aims to expand its eligible market by focusing on new subjects like math, music, and chess, with a medium-term goal of reaching 100 million daily active users (DAUs) by 2028. The company believes there's a huge market potential for math, with about 1 billion people learning math globally, and expects Duolingo Math to be the best tutor app for math this year. Chess has already achieved 7 million DAUs less than a year after launch, becoming the second-largest chess platform. Duolingo also sees significant room for growth in existing markets, noting that U.S. penetration is only 2% of internet users, and even reaching this level in all countries would more than double current DAUs. | Duolingo is not currently concerned about competition, stating it holds about 85% of the daily active users among language learning apps globally, a share that has remained flat. The company dismisses concerns about AI translation tools or all-purpose chatbots, as users primarily use Duolingo for hobby learning or to genuinely learn English, and churn surveys do not indicate these as reasons for leaving. Duolingo also believes it's difficult for new competitors to emerge and scale due to its strong free product, huge distribution, and the complexity of replicating its sophisticated app. The company has observed hundreds of apps attempting to compete but failing to grow. | The accelerating advances in AI are fundamentally changing the way people learn, creating an enormous opportunity for education platforms. AI is expected to enable teaching quality comparable to a one-on-one tutor, combined with the engagement of a mobile game. The cost of AI inference has significantly decreased over the last couple of years, making advanced AI features more accessible. Additionally, social media algorithms, such as those on TikTok, have changed, making consistent virality harder to achieve for marketing efforts. | Duolingo is undergoing a strategic shift in 2026 to prioritize user growth over short-term bookings and profitability, aiming to reaccelerate DAU growth after deceleration in 2025. The plan for 2026 focuses on teaching languages better, improving the free user experience, and investing in new growth engines like math, music, and chess. The company expects slower bookings growth (10-12%) and lower adjusted EBITDA margins (around 25%) for 2026, with R&D and sales and marketing spend outpacing revenue growth. Duolingo plans to experiment with monetization strategies that add value rather than friction, including direct ad sales and in-app purchases for avatars. The company will also scale advanced content for its top 9 languages to Duolingo score 129 and introduce 'speaking adventures' mid-year. | **Data | The transcript highlights the broader theme of AI-driven transformation in education, where AI is expected to fundamentally change learning methods and significantly improve teaching quality, making it comparable to one-on-one tutoring while being as engaging as a mobile game. Another emerging theme is the shift in monetization strategies for freemium models, moving away from friction-based approaches towards value-added features and alternative revenue streams like direct ad sales and in-app purchases, as AI reduces the cost of delivering premium experiences. | 2025 was another strong year for Duolingo. For the first time, we surpassed 50 million daily active users, and that's more than 5x as many as we had when we IPO-ed in 2021. We also delivered over 1 billion in bookings and more than $300 million in adjusted EBITDA. I'm more convinced than ever that the accelerating advances in AI will fundamentally change the way people learn. This creates an enormous opportunity for us. We are the most popular education app in the world by a margin, and we intend to lead this shift. Our medium-term goal is to reach 100 million daily active users in 2028. The size and scale of the market opportunity ahead is massive. I believe that this year, we're going to have the best tutor app for math. chess has grown quite a bit... we have about 7 million daily active users in chess and this is less than a year after we launched. we have about 85% of the daily active users of language learning apps in the world. this business can have tremendous scale even at the size we're at today, and we think we can be a lot bigger. | DAU growth over the past several years has been nothing short of phenomenal, it decelerated throughout 2025, and as the new year began, we continued seeing this trend. We now expect DAU growth to be about 20% year-over-year throughout 2026. in the short term, the short-term implication is that this year, we'll see slower bookings growth and lower profitability as captured in our guide. we are investing in 2026. As a result, we expect that R&D and sales and marketing spend growth will outpace revenue growth. adjusted EBITDA margin to decline roughly 3 points sequentially in Q2. compared to a year ago, it's not quite the same. we got ourselves into an interesting situation where both Duolingo is undermonetized and overmonetized at the same time. we have not yet seen an acceleration in DAUs that we think is like, 'Oh my god, we're done.' | Gilian Munson has been welcomed as the new CFO, replacing Matt Skaruppa. The company does not anticipate needing to double its workforce or marketing spend to achieve its growth goals, suggesting a focus on scaling efficiently. |
| About Expanding Eligible Market | About Competition | About The Broader Industry | Where Things Are Headed | Updates On Theme | Broader Themes Emerging | Bullish-Leaning Quotes (Short) | Bearish-Leaning Quotes (Short) | Hiring |
|---|---|---|---|---|---|---|---|---|
| Duolingo aims to expand its eligible market by focusing on new subjects like math, music, and chess, with a medium-term goal of reaching 100 million daily active users (DAUs) by 2028. The company believes there's a huge market potential for math, with about 1 billion people learning math globally, and expects Duolingo Math to be the best tutor app for math this year. Chess has already achieved 7 million DAUs less than a year after launch, becoming the second-largest chess platform. Duolingo also sees significant room for growth in existing markets, noting that U.S. penetration is only 2% of internet users, and even reaching this level in all countries would more than double current DAUs. | Duolingo is not currently concerned about competition, stating it holds about 85% of the daily active users among language learning apps globally, a share that has remained flat. The company dismisses concerns about AI translation tools or all-purpose chatbots, as users primarily use Duolingo for hobby learning or to genuinely learn English, and churn surveys do not indicate these as reasons for leaving. Duolingo also believes it's difficult for new competitors to emerge and scale due to its strong free product, huge distribution, and the complexity of replicating its sophisticated app. The company has observed hundreds of apps attempting to compete but failing to grow. | The accelerating advances in AI are fundamentally changing the way people learn, creating an enormous opportunity for education platforms. AI is expected to enable teaching quality comparable to a one-on-one tutor, combined with the engagement of a mobile game. The cost of AI inference has significantly decreased over the last couple of years, making advanced AI features more accessible. Additionally, social media algorithms, such as those on TikTok, have changed, making consistent virality harder to achieve for marketing efforts. | Duolingo is undergoing a strategic shift in 2026 to prioritize user growth over short-term bookings and profitability, aiming to reaccelerate DAU growth after deceleration in 2025. The plan for 2026 focuses on teaching languages better, improving the free user experience, and investing in new growth engines like math, music, and chess. The company expects slower bookings growth (10-12%) and lower adjusted EBITDA margins (around 25%) for 2026, with R&D and sales and marketing spend outpacing revenue growth. Duolingo plans to experiment with monetization strategies that add value rather than friction, including direct ad sales and in-app purchases for avatars. The company will also scale advanced content for its top 9 languages to Duolingo score 129 and introduce 'speaking adventures' mid-year. | **Data | The transcript highlights the broader theme of AI-driven transformation in education, where AI is expected to fundamentally change learning methods and significantly improve teaching quality, making it comparable to one-on-one tutoring while being as engaging as a mobile game. Another emerging theme is the shift in monetization strategies for freemium models, moving away from friction-based approaches towards value-added features and alternative revenue streams like direct ad sales and in-app purchases, as AI reduces the cost of delivering premium experiences. | 2025 was another strong year for Duolingo. For the first time, we surpassed 50 million daily active users, and that's more than 5x as many as we had when we IPO-ed in 2021. We also delivered over 1 billion in bookings and more than $300 million in adjusted EBITDA. I'm more convinced than ever that the accelerating advances in AI will fundamentally change the way people learn. This creates an enormous opportunity for us. We are the most popular education app in the world by a margin, and we intend to lead this shift. Our medium-term goal is to reach 100 million daily active users in 2028. The size and scale of the market opportunity ahead is massive. I believe that this year, we're going to have the best tutor app for math. chess has grown quite a bit... we have about 7 million daily active users in chess and this is less than a year after we launched. we have about 85% of the daily active users of language learning apps in the world. this business can have tremendous scale even at the size we're at today, and we think we can be a lot bigger. | DAU growth over the past several years has been nothing short of phenomenal, it decelerated throughout 2025, and as the new year began, we continued seeing this trend. We now expect DAU growth to be about 20% year-over-year throughout 2026. in the short term, the short-term implication is that this year, we'll see slower bookings growth and lower profitability as captured in our guide. we are investing in 2026. As a result, we expect that R&D and sales and marketing spend growth will outpace revenue growth. adjusted EBITDA margin to decline roughly 3 points sequentially in Q2. compared to a year ago, it's not quite the same. we got ourselves into an interesting situation where both Duolingo is undermonetized and overmonetized at the same time. we have not yet seen an acceleration in DAUs that we think is like, 'Oh my god, we're done.' | Gilian Munson has been welcomed as the new CFO, replacing Matt Skaruppa. The company does not anticipate needing to double its workforce or marketing spend to achieve its growth goals, suggesting a focus on scaling efficiently. |
Notes
| Date | Comment | Comment Type | Comment Sentiment | Link | IS CHANGE | Price Reaction |
|---|---|---|---|---|---|---|
| 2025-08-06 | Beat on users and revenue; raised FY25 guide. Energy mechanic, Super strength offset slower Max and DET. Shares jumped post-print, then faded as US DAU concerns, social-media reset, and uncertain Max China timing tempered enthusiasm. Duocon on 9/16. | Earnings Transcript | Mixed | +8.82% (vs SPY: +7.35%) | ||
| 2026-02-26 | Duolingo reported strong Q4 2025 results but announced a strategic pivot prioritizing user growth and free AI features over near-term monetization, targeting 100M DAU by 2028. This led to weaker 2026 guidance for bookings (10-12% growth) and adjusted EBITDA margins (~25%). The market reacted sharply negative, with shares plunging 14-24% over two days, as investors and analysts expressed concern over the trade-off between engagement and immediate profitability. A $400M buyback was also authorized. | Other | Neutral | https://vertexaisearch.cloud.google.com/grounding-api-redirect/AUZIYQGWPrhEIzup0HaCNHDlStxMUrzMilPAgUOTZ6r7S-BgqbYHd_QTtSBaijMGTj5GqBbYr_oN2YQwMx7v9svvHwJciw9rzE2nLxQMvlCe_OwqZR_tpYFHNRHgod1juaIgX1XHr3eggOGA2-EWZI4FOZPoNGU9Ru_p69_2zH32u0xzT0NiKUaPFTahXdwwjQQYdqocqmWdf3bn99aQXOxC66oDdlPYis57pOlkKBdg6p6pd1HvJW31zVCeGtqYaa6uzgQNTiU | False | Deferred (realtime snapshot stale) |
Upcoming Events
| Catalyst ID | Estimated Timing | Estimated Date Start | Estimated Date End | Catalyst | Why It Matters | Ticker Or Theme Specific | Transcript Date | Source Type |
|---|---|---|---|---|---|---|---|---|
| DUOL_b8221c4f | late in the year (2026) for modest returns, more and more as we move into '27 and '28 for significant acceleration | 2026-10-01 | 2027-12-31 | Reacceleration of Daily Active User (DAU) growth beyond the 20% year-over-year guided for 2026, driven by product improvements in language teaching, free user experience, and new subjects. | Successful reacceleration is crucial for achieving the medium-term goal of 100 million DAUs by 2028, leading to significantly higher bookings and profit. Failure to reaccelerate could negatively impact long-term valuation and investor sentiment. | Ticker | 2026-02-26 | earnings_transcript |
| DUOL_a28ef623 | over the course of this year | 2026-03-01 | 2026-12-31 | Rollout and A/B testing of AI features, specifically Video Call, into Super Duolingo, potentially with metered access. | This strategic shift aims to broaden access to advanced AI features, potentially increasing Super Duolingo subscriptions and retention. However, it carries the risk of cannibalizing higher-priced Max subscriptions, impacting overall bookings and average revenue per user (ARPU). | Ticker | 2026-02-26 | earnings_transcript |
| DUOL_e7ac9989 | this year | 2026-01-01 | 2026-12-31 | Development and launch of Duolingo Math with the goal of becoming the 'best tutor app for math'. | Successful expansion into new subjects like Math could significantly broaden Duolingo's total addressable market and user base, providing new avenues for DAU growth and long-term monetization, particularly given the high propensity to pay for math tutoring. | Ticker | 2026-02-26 | earnings_transcript |
| DUOL_f9144331 | for the next year, we're using this year | 2026-01-01 | 2026-12-31 | Evolution of Duolingo's monetization strategy to focus on value-added features and in-app purchases (e.g., avatar customizations, direct ad sales) rather than increasing friction for free users. | This shift is critical for achieving higher subscriber penetration (beyond 10% of monthly active users) while maintaining user growth. Success could lead to sustainable ARPU expansion and improved margins; failure could impact bookings and profitability. | Ticker | 2026-02-26 | earnings_transcript |
| DUOL_c07902da | in the coming year | 2026-02-26 | 2027-02-26 | Execution of the Board-authorized share buyback program of up to $400 million. | This represents capital allocation discipline and could provide support for the stock price, signaling management's confidence in the company's long-term value and financial strength. | Ticker | 2026-02-26 | earnings_transcript |