Latest episode
07.09.26
What if the apps posting the best revenue screenshots are the ones nobody actually uses? In this episode of Growth by Design, we sit down with Seth Miller, founder and CEO of Rapchat, who spent 13 years building a consumer music app to 15M+ users and 100M+ raps recorded — then rebuilt the whole operation around AI agents. Drawing on a decade of consumer app building, a Series A, and the decision to get off the VC treadmill, Seth unpacks how to tell when your product has hit its ceiling, why UA-dependent businesses are more fragile than they look, and what changes when agents ship you TestFlights every day.
How to find your product's ceiling and floor — and why most founders refuse to look
Why "a lot of apps that don't get used make a lot of money" — and why that's a fragile business
What's left to fall back on when a UA channel dries up or a store policy shifts
Building from zero with agents: the stack, the harness, and validating an alpha in three days
Build vs. buy across Superwall, RevenueCat and OneSignal — and why the contextual layer matters more than the tool
In this episode of Growth by Design, we sit down with growth product manager Luke Longworth — an early Superwall adopter who's spent years optimizing paywalls and subscription funnels for apps big and small. No copy-this-paywall templates, no silver bullets. Just how experienced operators read the data, prioritize tests, and turn one screen into durable revenue.
Hanna Grevelius (CPO at Bruce Studios) on why simpler — even "ugly" — paywalls often outperform polished ones, and how teams get misled by metrics.
Anastasiia Avramenko on scaling an app from 20K to 16M installs with minimal spend — the systems, experiments, and lessons behind sustainable growth.
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