Quick answer
Profitable growth can still kill cash.
For hardware teams, the dangerous gap is often the time between paying for stock and being paid by customers, distributors, or retailers.
What this tool is showing
The model tracks monthly units, revenue timing, stock cost, fixed overhead, and one-off month 1 spend. That is enough to show whether the business is on course to dip below zero even if demand looks encouraging.
Use it for
- estimating runway pressure before launch
- testing the effect of payment delay from channels or customers
- seeing whether higher sales volumes actually increase short-term cash strain