Four cohort signals worth checking before scaling spend

Before adding budget, compare first-value completion, early retention, revenue conversion, and payback by acquisition cohort. These signals expose whether apparently cheap users become durable customers.

Use fixed cohort windows so recent groups are not compared unfairly with mature ones. Separate organic and paid acquisition, and avoid attributing every difference to the channel before checking campaign, offer, and product changes.

Scaling is safer when a team agrees on guardrails in advance. Define the acceptable payback range and the retention floor, then review both as spend changes.