Pavilion Index
2024 Annual Letter
III · The Long Subscriber
Slide 14 of 28
Finding 03 · Retention cohorts, 18-month window
Subscribers don't churn — they
fade
.
Insight
Median session weight
Month 18 vs Month 1
38
%
−61 pts of engagement weight
Cohort size
14,820
Open rate, M18
22.4%
Formal cancel
4.1%
Engagement weight by month after signup
N = 14,820 · 2023 Q1 cohort
100
75
50
25
0
99
38
M1
M3
M6
M9
M12
M15
M18
18 MONTHS · −61 PTS
Spotlight cohort window
Context months
This is the
Kyiv VDNH Soviet Modernism
design system, applied by
Curio Design
— a design-style library for AI agents. Full Kyiv VDNH Soviet Modernism guide →
designbycurio.com/learn/ukrainian-kyiv-vdnh-arch-modern