Why Your Free Users Are Your Real Growth Engine – Cem Kansu, Duolingo CPO

On the podcast, I talk with Cem about the premium trap many apps fall into, why free trials work even for freemium products, and how ‘try for $0.00’ actually outperforms ‘try for free’. Top Takeaways: 💡 Protect the free moat — always Short-term revenue tricks like paywalling free features make metrics spike — then stall. Sustainable freemium growth depends on preserving free value. It’s not just ethical; it’s strategic. Pulling back too much invites competitors to offer what you took away, weakening both your brand and your growth loop. 🧪 A/B test relentlessly — but know when to lead with intuition Testing is essential, but not infallible. With 400+ experiments running at once, you’ll often see trade-offs between revenue and user experience. The art of product management is knowing when to ignore short-term data and make the long-term call that preserves user trust and helps achieve strategic goals. 🔁 Freemium is a growth engine, not a trade-off Your free users aren’t freeloaders — they’re your marketing engine. When you improve the free experience, you strengthen organic growth through word of mouth. Growth slows when you nickel-and-dime; it compounds when you delight. 💰 Monetize with empathy, not extraction Introducing monetization requires a cultural shift. The key is measuring everything — retention, reviews, complaints per DAU — and optimizing for user experience, not just ARPU. Test cautiously, communicate transparently, and say no to anything that erodes trust. 🧠 Build for everyone, not a persona In large-scale apps, personas can be counterproductive. People learn, play, and engage for wildly different reasons. Designing for inclusivity and broad appeal helps scale from millions to billions of users without alienating key segments. 💡 Strategic and Creative Use of Ads Ads at Duolingo were introduced carefully with the goal of balancing monetization with a positive user experience. The focus is on surfacing ads at non-intrusive moments, such as after completing a lesson, and on carefully controlling ad content. Duolingo even partners with advertisers to integrate elements of Duolingo branding into third-party ads. About Cem Kansu: 🚀Chief Product Officer at Duolingo 📱 Cem Kansu is the former VP of Product at Duolingo, where he led the company’s monetization strategy, introducing ads and subscriptions that turned Duolingo into a sustainable business. With deep expertise in product development and user experience, he helped grow subscriptions to over 80% of revenue, while keeping the core product free and mission-driven. 👋 LinkedIn

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Why Your Free Users Are Your Real Growth Engine – Cem Kansu, Duolingo CPO is an episode from Sub Club by David Barnard.

This episode is 65:44 long.

This episode was published on Jan 21, 2026.

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