The marketplace becomes self-sustaining when women begin inviting friends. This is the most important inflection point in the SPARK growth model. Before this trigger, growth requires constant founder intervention. After it, growth becomes organic.
| Indicator | Target |
|---|---|
| Female Referral Rate | >35% — women actively inviting friends |
| Positive Event Experiences | NPS ≥60 — women reporting great experiences |
| High-Quality Male Supply | All male profiles photo-verified |
| Female D7 Retention | >35% — women returning after first week |
When all four indicators are met simultaneously, the female density trigger has been reached.