IIInigence
Mobile Development·8 min read

How Much Does It Cost to Build a Custom Mobile App?

Jude Lee
By Jude Lee · Founder & CEO

A custom mobile app typically costs from the low tens of thousands for a focused first version to six figures for a complex, multi-platform product. The price is driven by scope, number of platforms, integrations, backend complexity, and compliance needs. Starting with a narrow first version keeps both cost and timeline predictable.

"How much does a mobile app cost?" has the same honest answer as "how much does a building cost?" — it depends entirely on what you're building. But the factors that move the number are predictable, and once you understand them you can scope an app to fit a budget instead of guessing. Here's what actually drives the cost and how to keep it under control.

What actually drives mobile app cost

Five factors account for most of the variation in price:

  • Scope — how many features, and how polished. This is the biggest lever by far.
  • Platforms — one platform (iOS or Android) costs less than shipping both well.
  • Integrations — every third-party system, payment provider, or internal API adds work.
  • Backend complexity — a simple app talking to one service is very different from real-time, multi-user, or data-heavy systems.
  • Compliance — regulated domains like healthcare (HIPAA) or finance add architecture and testing.

Realistic ranges by complexity

App typeWhat it includesTypical range
Focused first versionOne platform, core feature set, basic backendLow tens of thousands
Standard productiOS + Android, several integrations, real backendMid five to low six figures
Complex productMulti-platform, heavy integrations, compliance, scaleSix figures and up

These are ranges, not quotes — the same feature list can land in different places depending on integrations and compliance. The point is that scope, not luck, determines where you land.

Why "start narrow" saves money

The most expensive way to build an app is to specify everything up front and build it all before anyone uses it. The cheapest is to build the smallest version that delivers real value, put it in users' hands, and let what you learn guide the rest. Starting narrow keeps the budget predictable and means you never pay to build features nobody wanted.

What's often left out of the budget

Two costs surprise teams: the backend (an app is only the visible half of the system) and ongoing maintenance (app stores, OS updates, and fixes are a running cost, not a one-time bill). A good estimate accounts for both from the start.

How we keep it predictable

We scope a fixed-price discovery first, so you see the number and the plan before committing to a build — then we start with a focused first version and expand. You can read more about our mobile app development approach, and our guide to custom AI development cost applies the same thinking to AI projects.

FAQ

How much does it cost to build a mobile app?
A focused first version typically starts in the low tens of thousands; a complex, multi-platform product with heavy integrations and compliance needs can reach six figures. The right number depends on scope, which is why we scope it before quoting.
What makes one app cost more than another?
The biggest drivers are scope, whether you need iOS and Android, the number and complexity of integrations, how much custom backend is required, and compliance needs like HIPAA.
How can I keep the cost predictable?
Start narrow. Building a focused first version, proving it, then expanding keeps both budget and timeline predictable and avoids paying for scope you don't need yet.
Do you quote a fixed price?
Yes — we run a fixed-price discovery so you see the number and the plan before committing to a build.

Related service

Mobile App Development

Mobile app development is designing and building native or cross-platform apps for iOS and Android.

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