Small-business decision system
Make the next business decision with the assumptions visible
Move from customer economics to cash, pricing, margin, break-even, and inventory without creating an account. Every calculator runs locally and states what it leaves out.
Choose the decision in front of you
Can acquisition economics work?
Model gross-contribution LTV and a planning CAC ceiling.
What is churn doing to revenue?
Trace customers and recurring revenue month by month.
How long does cash last?
Model runway, lowest cash, and operating break-even.
Can a price increase improve contribution?
Compare contribution after an explicit demand response.
How many units cover the goal?
Calculate whole-unit break-even or target-profit volume.
Is the unit margin healthy?
Translate cost and price into profit, margin, and markup.
How much ad spend can the product carry?
Find break-even ROAS and ACOS from unit economics.
When should stock be reordered?
Combine lead-time demand with explicit safety stock.
A practical sequence
- Validate contribution and break-even.
- Model acquisition value and churn.
- Stress-test pricing and cash runway.
- Set an inventory trigger that matches operating assumptions.
Decision receipts on these tools can be copied or printed locally. They are summaries—not forecasts or professional advice.