How much does it cost to build a mobile app?
What drives the cost to build a mobile app: native vs cross-platform, backend and integrations, design, QA, and maintenance, with real ranges by complexity.
The honest answer to what a mobile app costs is that it depends, but that is not useful on its own. What is useful is knowing which decisions move the number and by how much. A simple internal tool and a consumer app with payments, offline sync, and real-time updates can differ by an order of magnitude, and most of that gap comes from a handful of choices you make early. The market itself is worth building for: global app revenue reached about $522.7 billion in 2024 and is forecast to keep climbing toward the high $600 billions by 2027, per Statista. Here is where the money actually goes.
What changes the price the most
Three things drive cost more than anything else: the number of distinct features, how much of the app is custom versus standard, and how many external systems it has to talk to.
A login screen and a list view are cheap because they are solved problems. A custom scheduling engine, a mapping interface with live vehicle positions, or a document scanner with on-device processing are not. Every integration with a payment processor, an ERP, or a third-party API adds work for the happy path and more work for the error cases that always follow.
Scope discipline matters here. Teams that ship a focused first version and add features based on real usage spend far less than teams that try to build everything before launch. If you are early, our guide to cost to build an MVP is worth a read before you commit to a full build.
Cost ranges by app complexity
Exact numbers depend on your specifics, so treat these as tiers rather than quotes. Business of Apps, which aggregates agency data, pegs the average project at about $8,188 per month over roughly an 11-month timeline, which is why full builds commonly land in the six figures.
| Complexity | What it looks like | Typical range |
|---|---|---|
| Simple | A few screens, basic backend, one or two integrations, cross-platform | ~$40k to $80k |
| Moderate | User accounts, payments, several integrations, custom UI, offline support | ~$80k to $200k |
| Complex | Real-time features, heavy custom logic, multiple external systems, native performance needs | $200k to $400k+ |
Each tier up roughly multiplies effort, and the drivers are the same ones above: feature count, custom logic, and integrations. Two projects that sound identical in a one-line description can land in different tiers once you look closely. "An app that lets drivers log deliveries" is simple if it is a form and a list, and complex if it needs offline capture, photo upload, GPS tracking, and a sync back to your dispatch system. The description does not set the price. The requirements behind it do.
Native vs cross-platform cost impact
The platform decision has a direct cost effect.
- Native means separate iOS (Swift) and Android (Kotlin) codebases. Best performance and access to every OS feature, but you are building and maintaining two apps.
- Cross-platform, usually React Native, means one shared codebase that runs on both. You save meaningfully on the build and on ongoing maintenance because most features are written once.
This is not a fringe choice. In the 2024 Stack Overflow Developer Survey, Flutter and React Native were the two dominant cross-platform frameworks, used by roughly 9.4% and 8.4% of all respondents respectively, and together they account for the large majority of cross-platform mobile work. For most business apps, cross-platform lands the same result for less money and a faster path to both stores. Native earns its premium when you need heavy graphics, tight hardware access, or the last few percent of performance. We compare the technical trade-offs in cross-platform vs native apps and React Native vs Flutter.
Rates also shape the number, and the spread across regions is wide. US-based senior app engineers commonly bill in the $100 to $200 per hour range, with specialists higher, while offshore shops in markets like India and Vietnam often quote $20 to $40 per hour. The gap is real, but so is the hidden cost of it: rework, timezone lag, and thin domain knowledge routinely eat the apparent savings on anything that touches your core systems. A native build that doubles the engineering hours doubles the part of the invoice that scales with labor, which is exactly why cross-platform is the default recommendation for standard business apps.
Backend, APIs, and integrations
The part users never see often costs as much as the part they do. An app that stores anything, syncs across devices, or serves multiple users needs a backend: a database, an API, authentication, and hosting.
Integrations are where estimates tend to break. Connecting to a well-documented payment gateway is predictable. Connecting to an aging ERP with quirky data and no test environment is not. Ask early which systems the app must talk to, and treat each one as its own small project with its own risk.
The backend also decides how well the app behaves when the network is bad, which on mobile is often. An app that assumes a perfect connection feels broken the moment a user walks into an elevator. Building for spotty connectivity, with sensible caching and retry behavior, is more work than a naive online-only version, but it is the difference between an app people trust and one they delete. Decide up front how much offline capability you need, because retrofitting it later is expensive.
App store, design, and QA costs
Design is not decoration. Good UX reduces support load and drives adoption, and the discovery and design phase is where you catch expensive mistakes on paper instead of in code. Industry cost breakdowns put discovery at roughly 10% to 15% of a build, design at 20% to 25%, and engineering at 40% to 55%, which shows how much of the money is committed before a single production feature ships.
- Design: user flows, wireframes, and a visual system. More screens and more custom interaction cost more.
- QA: testing across devices, OS versions, and screen sizes. Mobile fragmentation makes this real work, not an afterthought.
- Store readiness: Apple and Google review processes, store listings, and the occasional rejection you have to fix and resubmit.
Skimping on QA is a false economy. A crash on a popular phone model can tank your ratings before you notice.
Maintenance and update budgets
A mobile app is never done. Apple and Google ship new OS versions every year, deprecate APIs, and change store requirements. If you do nothing, your app eventually breaks.
The common industry benchmark is to budget 15% to 20% of the original build cost per year for maintenance, covering hosting, dependency patches, security fixes, OS updates, and small improvements. The first year often runs higher, sometimes toward 50% of build cost, as you fix what real usage exposes. So a $150k app is not a one-time $150k. Plan for another $22k to $30k a year to keep it in the stores and working. This is not optional overhead. Our breakdown of custom software maintenance cost applies directly to mobile.
Getting a number you can plan around
A vague brief produces a vague quote and a scoped one produces a number you can plan around. Before you sign anything, ask a prospective partner to break the estimate into the phases above (discovery, design, build, QA, store submission, and a year of maintenance) so you can see where the money sits and challenge the assumptions behind each line. An estimate that arrives as a single lump sum with no breakdown is a signal the work has not been thought through. The way to get a defensible figure is a short discovery process that turns your idea into a scoped, testable plan. That is how we quote work: measurable acceptance criteria in the contract, two-week sprints, and a working demo each cycle. If you want a figure grounded in your actual requirements, get a technical proposal or see what we build.