How much does it cost to build an app? From MVP to scalable platform

Hiring someone to build an app is not a single price. Costs depend on scope, platform choices, infrastructure and how much you want to invest in maintainability. This guide breaks down where the budget goes, with concrete euro ranges and choices that often save money without sacrificing future growth.

I give indicative ranges and always note that prices vary per project. At the end there’s a practical checklist you can use when scoping your project.

Rough cost distribution

A typical distribution of the total budget for a new app looks like this:

• Research, UX and design: 15–25%
• Front-end (the app): 25–40%
• Back-end / APIs and integrations: 20–35%
• QA and testing: 10–15%
• Project management & scaling work: 5–15%
• Hosting, third-party services, licenses: ongoing and variable

This helps you prioritize. If you plan to scale, a solid API and data layer matter most. A very polished UI during discovery can push your MVP cost up without proven demand.

Indicative price ranges (indicative, varies per project)

A plain PWA can sit at the lower end. A real-time, highly regulated app with large-scale data processing will reach the higher ranges quickly.

Where the money goes — concrete items

1. Discovery and UX
   • User interviews, flows, wireframes and prototypes. Spending here reduces dev time later.
2. Design
   • Visual design, a component library and icons. A design system costs more up front, but reduces long-term dev hours.
3. App development
   • Cross-platform frameworks (React Native / Flutter) typically save 20–40% versus two native apps. If you need platform-specific features or top performance, native may be required.
4. Backend and integrations
   • API design, database, auth, payments and third-party integrations typically drive most of the technical complexity.
5. QA and testing
   • Manual and automated tests to avoid expensive post-release fixes.
6. Infrastructure and DevOps
   • Hosting, CDNs, monitoring. Small apps: €30–€200/month. Scaled apps: hundreds to thousands per month.
7. Maintenance
   • Ongoing bugfixes, OS updates, dependency upgrades.
8. Security and compliance
   • Basic security is non-negotiable. For regulated sectors or high-risk data, budget for audits. Use OWASP Top 10 as a risk checklist: https://owasp.org/www-project-top-ten/.

Performance and UX (don't underfund)

Slow apps and unstable layouts reduce retention. Web performance metrics like Core Web Vitals are also a useful reference for web-based apps and PWAs: https://web.dev/articles/vitals. Better performance costs some effort up front but saves money by reducing churn.

Usability guidelines such as the Nielsen Norman Group heuristics are practical at the design and review stages: https://www.nngroup.com/articles/ten-usability-heuristics/.

Money-saving choices that work in practice

• Start with a single, critical user flow for your MVP.
• Prefer cross-platform if you don’t need platform-specific native features.
• Use managed services for auth and payments to reduce development and compliance work.
• Define API contracts before front-end work starts.
• Allocate at least 15% of the dev budget to QA.
• Reserve 10–25% of the initial development budget for year-one maintenance.
• Set up monitoring and error tracking at release time.

When to invest more

• Expecting fast user growth and realtime requirements: invest in scalable backend architecture.
• Strong compliance and security needs: budget for audits, documentation and tooling.
• If UX is your main differentiator: invest in specialist design and, when needed, native performance.

Practical steps to get started

1. Write a two-page scope focusing on the crucial user flows.
2. Request fixed-scope proposals based on that brief and compare references.
3. Include a discovery phase (2–4 weeks) to validate assumptions.
4. Aim to ship an MVP in 8–12 weeks for the main flow and collect real user data.

For a breakdown of what should be in an estimate, see our page about app costs and our general service overview at app development.

If you want to discuss budgets, trade-offs or a concrete quote, contact us via /contact or request a short /quote. DevCru is a senior-led web and app studio from the Netherlands. We build custom websites, web apps and mobile apps and help teams make choices that don't become costly later.