App Development Cost in the Netherlands (2026): What You'll Actually Pay

The short answer

In 2026, a custom mobile app in the Netherlands typically costs between €20,000 and €150,000+, depending on complexity:

• Simple app (a few screens, one platform, basic backend): €20,000 – €40,000
• Medium app (custom features, API, two platforms, login, payments): €40,000 – €90,000
• Complex app (real-time data, AI features, integrations, high scale): €90,000 – €150,000+

A focused first version (MVP) usually starts at the lower end so you can launch, learn, and invest more once it's proven.

What actually drives the cost

Price isn't about “how big” the app feels. It comes down to a handful of real factors.

1. Number of features (and how custom they are). A login screen is cheap. A login that ties into your existing CRM, supports single sign-on, and handles role-based access is not. Every feature has a “standard” version and a “your-business” version, and the gap between them is where budgets move.

2. Platforms: iOS, Android, or both. Building separately for iOS (Swift) and Android (Kotlin) gives the deepest quality but roughly doubles the front-end work. Cross-platform tools like Flutter or React Native build both from one codebase and usually cut that part of the cost by 30–40% — which is why most Dutch business apps go cross-platform unless they need heavy native features.

3. The backend nobody sees. Almost every app needs a server behind it: the API, the database, authentication, and the admin panel your team uses. This is often a third of the total and is the part clients most often forget to budget for.

4. Design and UX. A template looks like a template. Real user research, a proper design system, and tested prototypes cost more upfront but save expensive rebuilds later.

5. Compliance (GDPR/AVG, and now the EU AI Act). Any app handling Dutch users' data must meet GDPR and the Dutch AVG. If your app uses AI, the EU AI Act (key rules enforced from August 2026) adds transparency and governance requirements. Building this in from day one is far cheaper than retrofitting it after launch.

6. Who builds it. A freelancer is cheapest per hour and riskiest overall. A large agency is most expensive. A focused senior team usually lands in between, with the advantage that the same people own design, app, and backend — so nothing gets lost in handover.

Cost by app type (real ranges)

These assume both platforms plus a backend. A single-platform MVP costs less.

The hidden costs people forget

• Maintenance: budget roughly 15–20% of build cost per year for updates, OS changes, and fixes.
• App store fees: Apple and Google developer accounts, plus their cut on in-app payments.
• Third-party services: maps, SMS, payment gateways, AI model usage — these are monthly bills, not one-offs.
• Scaling: an app that's cheap at 100 users can get expensive at 100,000 if nobody planned for it.

How to spend less without cutting corners

• Start with an MVP. Build the core, launch, and let real usage decide what to fund next.
• Go cross-platform unless you genuinely need native depth — Flutter or React Native saves real money.
• Use one team for app + backend. Coordinating three vendors costs more than the savings.
• Fix scope before building. Most overruns come from decisions changed mid-build, not from the original plan.
• Get a fixed proposal first. A clear scope and price beats an open hourly meter.

What this looks like at Mobilions

We usually begin with a small, fixed-scope discovery, then give you a written proposal in euros — scope and price set out plainly, no hourly meter, no surprises on the invoice. The same senior team handles app development, the backend, and, where you need it, custom software around it. If a simpler approach saves you money, we'll say so before you commit.

Want a fixed number for your app? Tell us what you're building and we'll send a written proposal in euros.