Chapter 03 / Cohort Amplitude
Sweep: weekly retention signal
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Observed pattern

Usage does not churn; it loses amplitude first.

engagement floor 50% first floor crossing 38.4% retained teams 100% 75% 50% 25% WK 01 WK 05 WK 09 WK 12
This is the Oscilloscope Trace design system, applied by Curio Design — a design-style library for AI agents. Full Oscilloscope Trace guide → designbycurio.com/learn/oscilloscope-phosphor-trace