How much does it cost to build a mobile app?
There is no single price. Cost depends on the number of screens and features, whether you build for one or both platforms, design depth, backend and integrations, and testing. A simple app costs far less than a marketplace with payments, chat and admin tools. Cross-platform frameworks such as Flutter often reduce cost because one codebase serves both iOS and Android.
What drives mobile app development cost
Mobile app cost is the sum of design, engineering, backend, testing and project management, so it moves with scope more than with any single choice. These are the factors that matter most.
- Features and screens: every extra feature adds design, build and test time.
- Platforms: iOS, Android or both, and whether you also need web or tablet layouts.
- Design depth: standard components are quicker than custom animation and bespoke interactions.
- Backend and APIs: accounts, databases, admin tools and business logic usually live on a server you also need to build.
- Integrations: payments, maps, chat, push notifications, analytics and third-party APIs each add work.
- Security and compliance: health, finance and children’s apps need extra safeguards.
- Testing and device coverage: more devices and operating system versions mean more testing.
- Team model: rates and efficiency differ between freelancers, agencies and dedicated teams.
Complexity tiers, from simple to advanced
Describing an app by its complexity gives a more useful starting point than comparing it with another app’s category.
| Tier | Typical scope | What drives cost |
|---|---|---|
| Simple | A handful of screens, basic sign-in and mostly static or list-and-detail content. | Design and a small backend. |
| Medium | User accounts, push notifications, payments or bookings, an admin panel and a few integrations. | Backend, integrations and testing. |
| Complex | Marketplace or social features, real-time chat or live tracking, offline sync, custom animation and several user roles. | Architecture, real-time infrastructure, security and QA. |
Native vs cross-platform: how the choice affects cost
Building separate native apps usually means two codebases and two sets of engineers, one for Swift on iOS and one for Kotlin on Android. Cross-platform frameworks such as Flutter and React Native let one team ship to both stores from a shared codebase, which typically reduces build effort and long-term maintenance.
Native development can still be the right call when your app depends on deep hardware access, advanced graphics or the newest platform features on day one. We compare the options in our guide to Flutter vs React Native.
Costs people forget
- Backend hosting and cloud services, which continue every month after launch.
- Developer accounts: an annual Apple Developer Program membership and a one-time Google Play registration.
- Third-party services for push notifications, SMS, email, maps and payments.
- Analytics and crash reporting tools.
- Maintenance: operating system updates, bug fixes, security patches and new device support.
- Legal documents such as a privacy policy and terms of use.
- Marketing and app store optimization to help people find the app.
How to reduce cost without cutting quality
- Start with a minimum viable product that delivers the core user journey, then expand.
- Rank features by value and defer the nice-to-haves.
- Choose a cross-platform framework when your product fits one.
- Reuse proven services for sign-in, payments and notifications instead of building them.
- Design with a component system so screens are consistent and faster to build.
- Phase the roadmap so each release is paid for by what you learned from the last.
How to get an accurate quote
- Describe the user and the problem the app solves.
- List must-have and nice-to-have features separately.
- Share reference apps you like and why.
- State your platforms, timeline and any fixed launch date.
- Mention integrations and the data the app needs to use.
- Ask for a breakdown that lists assumptions and exclusions.
Key takeaway: A good quote lists its assumptions and exclusions. When two quotes differ a lot, compare what each includes before you compare the price.
Frequently asked questions
How long does it take to build a mobile app?
A focused first release often takes a few months. Larger products with many integrations take longer. A clear scope, quick feedback from you and a phased roadmap are the biggest levers on timing.
Is Flutter cheaper than native development?
Often, because one codebase serves both iOS and Android, which cuts build and maintenance effort. The saving depends on how much platform-specific work your app needs.
Do I need a backend for my app?
Most apps do. Accounts, data storage, payments, notifications and admin tools usually need a server side, which is a significant part of the project.
What does it cost to maintain an app after launch?
Plan for ongoing work: operating system updates, bug fixes, security patches, cloud and service fees, and improvements based on user feedback. We usually agree a monthly support plan.