Episode

Behind the product: Duolingo streaks | Jackson Shuttleworth (Group PM, Retention Team)

This episode explores Duolingo's streak feature with Jackson Shuttleworth, Group PM for the Retention Team. They discuss how streaks became Duolingo's most impactful feature, driving over 9 million year-plus streaks and contributing significantly to their $14B valuation. The conversation covers the evolution from XP-based to lesson-based streaks, extensive A/B testing (600+ experiments in 4 years), and key insights about flexibility vs. perfection, user psychology, and engagement mechanics.