How much does it cost to build a mobile app?

The honest answer is: it depends — but not in the evasive way agencies usually mean it. App cost is driven by a short list of concrete decisions, and once you understand them you can estimate your own project within a sensible range. This is how we scope mobile work, with real numbers rather than a sales brochure.

What actually drives the price

A mobile app is not one thing you buy. It is a bundle of decisions, and each one moves the number. The biggest levers are these:

• Scope — the number of distinct screens and features, and how many of them are genuinely custom versus standard patterns.
• Platforms — iOS only, Android only, or both. A cross-platform framework like Flutter lets one codebase serve both, which is usually cheaper than two native teams.
• Backend — whether you need user accounts, a database, payments, real-time updates, and admin tooling, or just a thin client over an existing API.
• Design — using a clean system versus commissioning a distinctive, animated, brand-led interface.
• Integrations — payment gateways, maps, push notifications, analytics, and third-party APIs each add real work.

Realistic ranges in 2026

Prices vary enormously by region and team seniority, so treat these as bands, not quotes. A simple app — a few screens, one clear job, a light backend — typically lands in the low tens of thousands of dollars. A mid-complexity product with accounts, payments, a proper backend, and a polished design sits in the mid five figures. A large, multi-role platform with real-time features, a web dashboard, and ongoing scale can run into six figures. Building with a nearshore or offshore studio rather than a US or Western European agency can cut those figures by half or more for comparable quality.

Why the first number is never the final number

Two costs get forgotten in early conversations. The first is everything around the code: project management, QA, app store submission, and the back-and-forth of review. The second is what happens after launch. Software is not a painting you hang on a wall; it needs updates for new OS versions, bug fixes, and the features you'll want once real users arrive. Budget for maintenance from day one — a rough rule is 15 to 25 percent of the build cost per year — and you'll avoid the nasty surprise most first-time app owners hit in month six.

How to spend less without shipping less

The cheapest app is the one you scope well. A few habits reliably save money:

• Ship a real MVP. Build the one feature that proves the idea, launch it, and let usage tell you what to build next. Most of the backlog you imagine now is guesswork.
• Choose cross-platform unless you have a specific reason not to. For the large majority of apps, Flutter or React Native gives you both stores from one codebase.
• Reuse before you build. Payments, auth, and notifications are solved problems — use proven services rather than reinventing them.
• Write the scope down. A vague brief is the single most expensive thing in software; ambiguity gets paid for in change requests.

At Singleton we scope mobile projects with a fixed, written estimate before anyone commits, so you know the number and what's in it. If you're weighing an app and want an honest read on what it should cost — and whether you even need everything on your list — get in touch and we'll talk through it plainly.