Subscribers don’t churn — they quietly fade.

Email opens

−62%

From signup to month twelve, the slow drift no dashboard flags.

Paid retention

88%

Cards still bill while attention has long since wandered.

Cohort size

14,200

New readers tracked across one full calendar year.

This is the São Paulo Tropical Editorial design system, applied by Curio Design — a design-style library for AI agents. Full São Paulo Tropical Editorial guide → designbycurio.com/learn/selva-tropical-editorial-saopaulo-2019