About
Built for the moment before you spend the money
Nexa28 is a profitability operating system from Perfectum Technologies, made for people who sell things and need to know what is left after every cost.
What Nexa28 does
It takes your prices, costs, fees and volumes and shows the profit that survives them. It lets you change one assumption at a time, compare the options you are weighing, and print the reasoning behind the decision.
What it deliberately is not
- Not accounting software and not a replacement for your bookkeeping.
- Not a CRM, an ERP or an analytics suite.
- Not a predictive engine — no forecast is invented on your behalf.
- Not a data collector — your figures stay in your browser.
How results are produced
Every calculator uses fixed, published formulas. Each result can be expanded to show the formula in plain language, the same formula with your numbers substituted in, and the outcome. If an input is missing, the result says so rather than filling a gap.