Core Diagnostic
Behavioral PMF Signals
Quantitative
Flattening Retention
A core group of users never leaves. The curve stops decaying and levels off.
SIGNAL
Flat tail at 20-40%
Qualitative
Language Mirroring
Users describe the product using the exact terminology from your positioning.
SIGNAL
Verbatim Value Match
Financial
NRR Expansion
Existing cohorts spend more every month than they churn.
SIGNAL
>110% Net Retention