Podcast · ~70 min

The Original Growth Hacker Reveals His Secrets (Sean Ellis)

Sean Ellis, Lenny Rachitsky · Lenny's Podcast Freemium Intermediate

Sean Ellis coined growth hacking and built the 40 percent product market fit test, and here he explains why retention, not short lived acquisition, compounds. He connects measuring whether your users would miss you to knowing whether the first 10 will stick and refer. A clear grounding in why retention is the real growth engine this early.

  • Acquisition spikes fade, retention improvements compound over time
  • Measure fit by whether users would be very disappointed without you
  • A north star metric should track real value delivered, not vanity
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The question it answers

  1. How do I actually keep my first 10 customers so they don't quietly churn while I go chasing the next 10?

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