What decision are you trying to make?
Choose the question in front of you. Nexa28 opens the model that answers it, using your own numbers and showing every formula behind the result.
Change a price
“Should I raise or lower my price?”
Put your current price next to the price you are considering and see the profit difference.
Model this decisionLaunch a product
“Is this product actually profitable?”
Model cost, shipping, fees and advertising against the price you plan to charge.
Model this decisionScale advertising
“How much can I safely spend?”
Connect ROAS and cost per sale to the contribution profit each order actually leaves behind.
Model this decisionRun a promotion
“How much can I discount without destroying profit?”
Test a discounted price against the extra volume it would need to pay for itself.
Model this decisionCheck break-even
“How many sales do I need?”
Find the sales volume and revenue where fixed costs are finally covered.
Model this decisionReach a profit goal
“How do I reach my target profit?”
Turn a monthly profit target into the orders, revenue and traffic it requires.
Model this decisionCompare strategies
“What happens if things change?”
Put a baseline next to several options and compare the modelled outcomes.
Model this decisionAnalyse a business
“Is my business model profitable?”
Model store economics end to end, cost line by cost line.
Model this decisionHow a decision gets made
Inputs become calculations, calculations become scenarios, scenarios become a decision you can explain.
- 01
Define the decision
Pick the question you actually need answered.
- 02
Enter assumptions
Only numbers you know — nothing is filled in for you.
- 03
Calculate baseline
See contribution, margin and break-even on today's numbers.
- 04
Create a scenario
Change a price, cost or ad assumption and recalculate.
- 05
Compare outcomes
Put the baseline and the scenario side by side.
- 06
Understand trade-offs
See what changed, what it did, and what it cannot tell you.
- 07
Make the decision
Commit with the numbers behind it, or model another option.
Nexa28 models outcomes from the assumptions you enter. It does not predict market behaviour, and results are estimates for planning purposes — not financial advice.