Measure first-month contribution for subscription ads
Evaluate subscription acquisition before assuming long-term retention.
Use cash and variable costs from the first month
A plan charges $50 and has $14 in first-month service, payment, and onboarding costs. The initial contribution before ads is $36. If acquisition costs $48, the first month is $12 short before fixed costs.
Model future recovery with real cohorts
If the next active month contributes $40 and 70% of the original cohort remains, expected month-two contribution per acquired customer is $28. Under those assumptions, cumulative contribution crosses acquisition cost in month two. Show the retention input next to the result.
Track exposure when volume grows
A campaign can have attractive projected payback and still require substantial cash at launch. Compare modeled results with settled refunds and early cancellations by plan. Review whether the new traffic has the same retention as the cohort used to set the budget.
Try a related tool
Estimate what you can pay to acquire an order while reserving a desired contribution. Use consistent per-order inputs.
