Lenny's PodcastAlbert Cheng: Why amplifying users beats forcing virality
Through Chess.com losses and Grammarly sampled paid features for free users: retention is gold for subscriptions, explore-exploit picks the right mountain.
Episode Details
EPISODE INFO
- Released
- October 5, 2025
- Duration
- 1h 25m
- Channel
- Lenny's Podcast
- Watch on YouTube
- ▶ Open ↗
EPISODE DESCRIPTION
Albert Cheng has led growth at three of the world’s most successful consumer subscription companies: Duolingo, Grammarly, and Chess.com. A former Google product manager (and serious pianist!), Albert developed a unique approach to finding and scaling growth opportunities through rapid experimentation and deep user psychology. His teams run 1,000/year, discovering counterintuitive insights that have driven tens of millions in revenue. *What you’ll learn:*
- How to use the explore–exploit framework to find new growth opportunities
- How showing premium features to free users doubled Grammarly’s upgrades to paid plans
- What good retention looks like for a consumer subscription app
- Why resurrected users drive 80% of mature product growth
- Why “reverse trials” work better than time-based trials
- The three pillars of successful gamification: core loop, metagame, and profile
*Brought to you by:* Vanta—Automate compliance. Simplify security: https://vanta.com/lenny Jira Product Discovery—Confidence to build the right thing: https://atlassian.com/lenny Miro—A collaborative visual platform where your best work comes to life: https://miro.com/lenny *Transcript:* https://www.lennysnewsletter.com/p/how-to-find-hidden-growth-opportunities-albert-cheng *My biggest takeaways (for paid newsletter subscribers):* https://www.lennysnewsletter.com/i/174369960/my-biggest-takeaways-from-this-conversation *Where to find Albert Cheng:*
- X: https://x.com/albertc248
- LinkedIn: https://www.linkedin.com/in/albertcheng1/
- Chess.com: https://www.chess.com/member/Goniners
*Where to find Lenny:*
- Newsletter: https://www.lennysnewsletter.com
- X: https://twitter.com/lennysan
- LinkedIn: https://www.linkedin.com/in/lennyrachitsky/
*In this episode, we cover:* (00:00) Introduction to Albert Cheng (04:25) From classical pianist to growth leader (09:37) The explore and exploit framework for growth (15:19) How to know when to explore vs. exploit (16:34) Using AI to accelerate growth experimentation (20:42) Grammarly’s biggest monetization win (24:36) Freemium vs. trial models for subscription products (28:03) What retention rates you need for subscription success (32:06) The importance of resurrected users (34:35) Differences between Duolingo, Grammarly, and Chess.com (45:53) How AI is changing Chess.com (51:19) How AI is changing the growth role (53:47) Tips for running successful experiments at scale (57:22) How to shift company culture toward experimentation (1:01:19) Key lessons from running experiments at scale (01:04:41) The three pillars of successful gamification (1:07:50) The most counterintuitive lesson about building teams (01:10:38) Deciding what size company is a good fit (1:13:28) Failure corner (1:16:42) Lightning round and final thoughts *Referenced:*
- How Duolingo reignited user growth: https://www.lennysnewsletter.com/p/how-duolingo-reignited-user-growth
- Inside ChatGPT: The fastest-growing product in history | Nick Turley (Head of ChatGPT at OpenAI): https://www.lennysnewsletter.com/p/inside-chatgpt-nick-turley
- Explore vs. Exploit: https://brianbalfour.com/quick-takes/explore-vs-exploit
- Grammarly: https://www.grammarly.com/
- Reforge: https://www.reforge.com/
- Chess.com: https://www.chess.com/
- Everyone’s an engineer now: Inside v0’s mission to create a hundred million builders | Guillermo Rauch (founder & CEO of Vercel, creators of v0 and Next.js): https://www.lennysnewsletter.com/p/everyones-an-engineer-now-guillermo-rauch
- Building Lovable: $10M ARR in 60 days with 15 people | Anton Osika (CEO and co-founder): https://www.lennysnewsletter.com/p/building-lovable-anton-osika
- Figma: https://www.figma.com/
- Cursor: https://cursor.com/
- The rise of Cursor: The $300M ARR AI tool that engineers can’t stop using | Michael Truell (co-founder and CEO): https://www.lennysnewsletter.com/p/the-rise-of-cursor-michael-truell
- Claude Code: https://www.anthropic.com/claude-code
- GitHub Copilot: https://github.com/features/copilot
- Noam Lovinsky on LinkedIn: https://www.linkedin.com/in/noaml/
- The happiness and pain of product management | Noam Lovinsky (Grammarly, Facebook, YouTube, Thumbtack): https://www.lennysnewsletter.com/p/the-happiness-and-pain-of-product
- Kyla Siedband on LinkedIn: https://www.linkedin.com/in/kylasiedband/
...References continued at: https://www.lennysnewsletter.com/p/how-to-find-hidden-growth-opportunities-albert-cheng *Recommended books:*
- Snuggle Puppy!: A Little Love Song: https://www.amazon.com/Snuggle-Puppy-Little-Boynton-Board/dp/1665924985
- Ogilvy on Advertising: https://www.amazon.com/Ogilvy-Advertising-David/dp/039472903X
- Dark Squares: How Chess Saved My Life Hardcover: https://www.amazon.com/Dark-Squares-Chess-Saved-Life/dp/1541703286
_Production and marketing by https://penname.co/._ _For inquiries about sponsoring the podcast, email podcast@lennyrachitsky.com._ Lenny may be an investor in the companies discussed.
SPEAKERS
Albert Cheng
guestLenny Rachitsky
host
EPISODE SUMMARY
In this episode of Lenny's Podcast, featuring Albert Cheng and Lenny Rachitsky, Albert Cheng: Why amplifying users beats forcing virality explores albert Cheng reveals hidden growth engines behind beloved subscription products Albert Cheng, a leading consumer growth leader from Duolingo, Grammarly, and Chess.com, shares his mental models and tactics for uncovering and scaling growth opportunities in subscription products.
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