Cheng: Duolingo's product experience changes multiple times daily per user
Albert Cheng · Finding hidden growth opportunities in your product | Albert Cheng (Duolingo, Grammarly, Chess.com) · Oct 5, 2025 · at 35:47
Albert Cheng, former growth leader at Duolingo, Grammarly, and Chess.com, describes Duolingo's experimentation velocity and internal engineering cadence.
0:00 / 0:05exact quote · 6.0s
▶ Watch the full episode on YouTube → 720p mp4 · rendered on demand · StarZero watermark
“The product experience of Duolingo actually like changes multiple times per day for each user, which is pretty shocking.”
quote is from the automated transcript, cleaned for reading: filler sounds and stutters are removed, nothing is rephrased. names can be misheard (the analysis reads context, assessments check outside sources). how →
More from Albert Cheng
Duolingo's true core superpower is habit formation, not language teaching
“Duolingo, even though the product they're providing is around language learning, I think the original ethos of how to start the company was really around motivation, right? The hardest thing to its habits, right? How do you build that daily habit? And I actual…”
Deep domain experience can be a crutch when hiring in AI
“Over and over and over, like I saw some of the highest performers just being people that had very high agency, had that clock speed, had that energy. Yes, they cared about the mission, but they didn't necessarily need to have deep experience on that matter. An…”
Cheng: Existing user retention is the primary compounding lever for mature daily apps
“I think, especially if you have a product that has daily frequency, like that's the, actually the retention that matters the most is that like of your existing user base that has developed a habitual pattern, how sticky is your product? And it's that retention…”
Duolingo tracked user screenshots to identify and enhance organic viral moments
“We invested actually in some time to essentially add screenshot tracking for, like, a brief period of time in the app, just so we could find out the hotspots of where users were doing screenshots, and you see this in other apps, too. It's not necessarily, like…”
Albert Cheng: Music and growth both rely on rapid mistakes and repetition
“I think music and growth, they both rely on this just consistent repetition. Like you're constantly making mistakes. You have this super tight feedback loop. You have to get really resilient to just making mistakes all the time. And you know that the way of le…”
Albert Cheng: Growth requires pairing rigid structural models with daily creativity
“They both have this like structural underpinning to them with growth. You have a growth model. You have metrics, you have experiments, you have channels, things like that, but you also need on a day-to-day basis to have creativity. You gotta come up with, like…”