Detailed view
How this calculator works
The answer does not change between Quick and Detailed. This is the professional finance underneath it — the formula, assumptions and mechanics you can inspect when you want the extra detail.
Upfront + per-period
Total contribution = contribution/unit × monthly units × life months. Launch cost = one-off fixed dev/launch cost. Net = total contribution − launch cost. The lifetime economic read for one product.
Payback + ROI
Payback months = launch cost ÷ (contribution/unit × monthly units). ROI = (total contribution − launch cost) ÷ launch cost. Pick the metric against your own planning horizon.
