“How much does it cost to build an app?” has the same honest answer as “how much does it cost to build a house?” — it depends on what you build, who builds it, and how well. But “it depends” is useless when you are trying to budget. So here is the actual breakdown: what the money pays for, where it goes, and what moves the number up or down.
What you're actually paying for
Most of an app's cost is not code — it is the thinking around the code. You are paying for the decisions that separate something that demos well from something that survives real users: how the data is modelled, where the edge cases are handled, how it behaves under load, and how it is kept secure. The visible screens are the cheap part. The reliability behind them is where the work — and the budget — actually goes.
What drives the number
A handful of factors explain most of the gap between a €7k build and a €70k one:
- Scope — how many features, and how deep each one goes. One screen that does its job is cheap; a dashboard plus payments, messaging, and an admin panel is not.
- Complexity — bespoke logic, real-time behaviour, and anything touching money, scheduling, or permissions costs more to get right.
- Integrations — every external system (payments, CRM, maps, email, a legacy API) is a connection to build, test, and keep working.
- Platforms — web only is cheapest; add iOS and Android and you add surface area to build and maintain.
- Design — a templated UI is fast; a distinctive, accessible, well-tested interface takes real design time.
- Data & compliance — sensitive data, GDPR, audit trails, and regulated industries add necessary, non-optional work.
Where the money goes, phase by phase
A typical custom build splits its budget roughly like this — the proportions matter more than the exact percentages:
- Discovery & scoping (~10%) — working out what to build and what not to. The cheapest place to save money, because it stops you building the wrong thing.
- Design (~15%) — flows, screens, and the details that make it usable.
- Build (~45%) — front end, back end, and integrations. The largest slice.
- Testing & QA (~15%) — the part cheap quotes quietly drop, and the part that decides whether launch is calm or a fire drill.
- Launch & infrastructure (~10%) — deployment, monitoring, and the setup that keeps it running.
- Ongoing maintenance (~15–20% of the build cost per year) — updates, fixes, and changes. Software is not a one-time purchase; budget for the life of it, not just the birth.
What projects actually cost
Rough starting points for a custom build in 2026, with a senior team and production-grade quality:
- A scoped, single-purpose tool or automation — from around €7k. Proves the value of one workflow without committing to a platform.
- A full production application across several features, with real integrations and monitoring — from around €18k, and up with scope.
- An ongoing partnership where a team builds and grows the product with you — from around €12k per month.
These are starting points, not quotes. The only route to a real number is to break your specific project down — which is exactly what our cost estimator does, free and without an email wall.
How to spend less without getting less
You lower the cost of an app the same way every time, and none of it involves buying cheap:
- Tighten the scope. Ship the smallest version that delivers real value, then let usage decide the rest. Most first versions are twice as big as they need to be.
- Invest in architecture early. The cheapest decisions to get right, the most expensive to fix later.
- Use a small senior team end to end. Experience avoids the rewrites and hand-off losses that quietly double a budget — a point worth its own article.
- Use AI-accelerated development where it genuinely helps. Done well, it compresses the routine work and brings timelines — and cost — down.
The bottom line
The price of an app is set long before anyone writes code — by scope, by architecture, and by who is doing the work. Decide those well and you get something that costs less to build and far less to live with. Decide them badly and the cheap quote becomes the expensive project.
If you want a real number for your idea — scope, a range, a timeline, and the risks — the cost estimator is free, or book a call and we will work through it with you.