Lenny's Podcast: Product | Growth | Career Behind the product: Duolingo streaks | Jackson Shuttleworth (Group PM, Retention Team)
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Dec 15, 2024 
In this discussion, Jackson Shuttleworth, Group Product Manager at Duolingo, reveals the secrets behind the game-changing Streaks feature that has propelled Duolingo to over 600 million users. He shares the evolution of Streaks and insights gained from 600 experiments, shedding light on user motivation and engagement. Jackson highlights the delicate balance between flexibility and user commitment, the psychological impact of Streaks, and strategies for effective product management. His wisdom on high-velocity teams and user retention tips are invaluable for aspiring product managers.
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Internal Streak Discussions
- Jackson Shuttleworth has only discussed the streak feature in-depth internally at Duolingo.
- He uses it for onboarding, but an hour only covers 30% of the topic's complexity.
Streak's Impact
- Streaks are Duolingo's biggest growth lever, driving daily active users (DAUs) and retention.
- Over 9 million users have year-long streaks, demonstrating the feature's impact.
XP to One Lesson
- Duolingo's streak initially tracked XP goals, allowing multiple lessons per day.
- Switching to a one-lesson-per-day streak significantly increased DAUs without harming user engagement.
