“Those who are using both the workouts and nutrition — they're driving conversion if they're new so the percentage of those who are converting are much higher. And those who are using both are also much more retentive — they're staying on the platform.”

Secondary product-market fit: hybrid users on both workouts and nutrition convert and retain at higher rates

Ladder's nutrition feature validated within 100 days: hybrid users (workout and nutrition) show higher trial-to-paid conversion and better long-term retention than single-track users. Gammon frames this as secondary product-market fit — a new surface area that multiplies the value of the core product. His early leading indicator for the new feature: day-1 and day-2 nutrition logging consistency, not subscription renewals weeks later. The feature came directly from clear survey signal — 7,500+ responses, nutrition request as the loudest theme.