Commissioning custom software is a big step. You're deliberately choosing a solution that doesn't come off the shelf — and there's a reason for that. But what does it actually cost? What do you need to arrange? And how do you avoid the most common mistakes?
In this article I explain everything from my own practice as a software engineer. No sales pitch, just honest information.
When do you choose custom software?
Standard software works fine for generic processes. But as soon as your business has a workflow that's too specific for what a SaaS package offers, you hit limitations:
- Two systems that don't communicate with each other
- Employees manually transferring data between tools
- Reports that never quite match because the system doesn't understand your definitions
- Process automation that "almost" works but still requires a manual step
If you recognize yourself in one of these situations, custom software is worth exploring.
What does custom software cost?
The honest answer: it depends on the complexity. But to give you a framework:
- Small automation or tool (2–6 weeks): €5,000 – €20,000
- Mid-sized system with API integrations (2–4 months): €20,000 – €75,000
- Enterprise platform or mobile app (4–12 months): €75,000+
Compare this with the alternatives: a full-time software developer costs €60,000–€90,000 per year in salary alone, not counting overhead. Custom software is in many cases cheaper than an internal team, especially for scoped projects.
What determines the price?
The biggest price factors are:
- Complexity of the logic — The more exceptions, calculations or decision trees, the more time.
- Integrations with existing systems — Every API connection takes time, especially when the other system's documentation is poor.
- User interface — An internal tool without a polished UI is faster than a consumer app where design matters.
- Scaling and performance — Building software for 10 users is different than for 10,000.
- Maintenance and further development — Who manages it after delivery?
The process: from idea to live software
A solid process looks like this:
- Discovery — Understanding the problem. What's the current process? Where's the pain? What's the desired outcome?
- Scope definition — What do we build, and what don't we? A sharp scope prevents endless timelines.
- Architecture decisions — Which technology? Which data model? How do we scale later?
- Building in iterations — Not building for 6 months and then delivering all at once. Working in sprints so you can give early feedback.
- Testing and deployment — Automated tests, staging environment, production deployment.
- Handover and documentation — So you can continue with any developer later, not just me.
Most common mistakes
1. Wanting too much in the first version
V1 should solve the core problem, not every possible future wish. Every feature you add to the first version nearly doubles the chance of delays.
2. Not investing enough time in the discovery phase
Building software starts with understanding what you're building. Spending weeks understanding the problem saves months of rework.
3. Choosing on price rather than quality
The cheapest quote is rarely the best investment. Poorly built software costs you more in maintenance and rewrites.
4. Not assigning an internal owner
Custom software requires a contact person on your side who can make decisions. Without that person, a project stalls.
How to choose the right partner?
Ask these questions in every conversation:
- What's your approach when the scope changes midway?
- Can you share examples of similar projects?
- Who actually builds it — you, or is it outsourced?
- What do I get if I discover a bug after delivery?
- What does the documentation look like?
Watch out: agencies scale their teams with juniors or outsource to low-cost countries. A specialized engineer who does the work themselves is in most cases faster, cheaper and more reliable.
Ready to get started?
At Zoyare I always start with a free 30-minute conversation. Not a sales pitch, but honest advice on whether custom software is the right solution for your situation. If standard software is a better fit, I'll tell you that too.