Know what your software should cost. Pay for what is delivered. Prove the value.
Independent software cost estimation, output-based contracting and value-for-money benchmarking for organisations that spend millions on software. Based on ISO function points and ISBSG industry data.
President of Nesma · ISBSG board member · Co-author NPR 5333:2025 · ICEAA-certified cost estimator. Clients include ARAG, Turkcell, UWV, LVNL, Eneco, DELA and Abbott.
Are you getting value for the money you spend on software?
Whether you are about to invest, contracting a supplier or running agile teams: we answer it with objective, verifiable numbers.
Software Investment Reality Check
Before you invest: "Is this budget, and this vendor quote, realistic?"
ISO functional size of the scope, low / likely / high cost and schedule scenarios, key risk drivers and a board-ready summary. In 4 weeks, fixed price.
Output-based Contracting
When you contract: "How do we pay for delivered software, not hours?"
A baseline and price-per-function-point benchmark, then a step-by-step move from T&M to output-based contracts (NPR 5333), with a trial period before money depends on it.
While you deliver: "What do we get for every €1,000 we spend?"
A quarterly C-level dashboard per team or supplier: productivity, cost, speed and quality against industry data. Start with a one-team, one-sprint pilot (€1,950).
Value for Money
We don't build software, so we have no stake in anyone's numbers.
Vendors estimate their own work. Internal teams defend their own velocity. You need someone who measures both sides with the same, standardised yardstick: ISO function points, benchmarked against industry data.
Why independent matters
Who you work with
Drs. Harold van Heeringen: 25+ years in software measurement, estimation and benchmarking. President of Nesma, ISBSG board member and former president, co-author of NPR 5333:2025 and ICEAA-certified software cost estimator.
What it looked like in practice
Selected engagements. Where marked, the work was led by Harold in a previous role.
Cost estimation · TKP
A realistic budget before a major build: objective sizing, historical data and parametric models gave a minimum, likely and maximum scenario for effort, cost and duration.
Work led in a previous role.
Output-based contracting
Facing rising T&M costs and opaque velocity figures, an organisation moved to measured functional output and a benchmarked price-per-function-point model that client and suppliers could both trust.
Organisation anonymised.
For a large Dutch auction, a benchmark of two agile teams showed productivity, cost efficiency, delivery speed and quality in line with international data, giving the supplier a factual story for its client.
Work led in a previous role.
Agile team benchmark · Conclusion
Not sure which applies to you?
Book a free 30-minute call. You'll leave with a first, independent view on your situation and what a sensible next step would cost.
Contact
Get in touch with us:
Tel: +31 6 523 273 30
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