App development in the UK is priced primarily by complexity, and in 2026 most business apps cost between £15,000 and £150,000 to design, build and launch. A simple app with a handful of screens and no backend sits at the lower end, typically £15,000 to £35,000. A mid-complexity app with user accounts, a backend, and integrations usually falls between £35,000 and £80,000. Complex apps, such as marketplaces, logistics platforms, or anything with real-time features, offline working, or heavy integration, commonly run from £80,000 to £150,000 or more. The right figure for your project depends on the number of features, the platforms you target, and how much backend and integration work sits behind the screens.
If you are budgeting for a new app or comparing quotes from development companies, this guide explains how app development is priced in the UK, what should be included, the ongoing costs that catch people out, and the questions to ask before you commit. As a UK mobile app development company, Synergi Tech builds native and cross-platform apps for businesses across the country, and we have written this guide to help you understand what fair value looks like, whether or not you choose to work with us.
How app development is priced in the UK
Almost every UK development company prices apps in one of two ways: a fixed price for a defined scope, or a day rate applied to an estimated number of days. In 2026, UK agency day rates typically range from £400 to £900 per day depending on seniority and location, with London agencies at the top of that range. Freelancers can be cheaper, but you take on more delivery risk and usually need to manage the project yourself.
A fixed-price quote works well when your requirements are clear and stable. A day-rate or sprint-based arrangement suits projects where the scope will evolve, which is most of them. Many businesses get the best results from a hybrid: a fixed price for a clearly defined first version, then ongoing sprints for improvements once real users start providing feedback.
Be cautious of quotes dramatically below the ranges in this guide. Offshore rates can look attractive, but the total cost of ownership often ends up higher once you account for communication overhead, rework, and the cost of a UK team later untangling code that was built quickly to a price.
Typical costs by app complexity
Simple apps: £15,000 to £35,000. These have a small number of screens, minimal or no backend, and no complex integrations. Examples include a content or brochure app, a simple booking or enquiry app, or an internal tool that displays data from one existing system. Timescales are usually 6 to 12 weeks.
Mid-complexity apps: £35,000 to £80,000. This is where most real business apps sit. They include user registration and login, a custom backend with a database, an admin area, push notifications, and integration with one or two systems such as a CRM, a payment provider, or accounting software like Xero or Sage. Expect 3 to 6 months from kickoff to launch.
Complex apps: £80,000 to £150,000+. Marketplaces, fleet and logistics platforms, apps with real-time tracking, offline-first field service tools, and anything handling payments at scale or regulated data. These involve significant backend engineering, multiple integrations, and rigorous testing. Timescales run from 6 months upwards, and these projects are almost always delivered in phases.
The platform decision also moves the number. Building natively for both iOS and Android costs more than a single cross-platform build using a framework like React Native or Flutter. Cross-platform is the right call for most business apps in 2026; native still wins for apps that need deep hardware access or the absolute best performance.
What affects the cost most
The biggest cost drivers are almost never the visual design. They are:
- Backend and data. Every screen that shows live, user-specific data needs an API, a database, and hosting behind it. The backend is commonly half the total budget.
- Integrations. Each system your app must talk to, whether a CRM, an ERP, accounting software, or a payment gateway, adds design, build, and testing time. Integrations with older or poorly documented systems cost the most.
- User roles and permissions. An app where customers, staff, and administrators all see different things is substantially more work than a single-role app.
- Offline working. Apps that must work without a connection and sync later, common in field service and logistics, add significant engineering complexity.
- Compliance and security. Apps handling payment data, health information, or children's data carry extra design, testing, and documentation requirements under UK GDPR and sector rules.
The cheapest feature is the one you cut. A disciplined first version that solves one problem well nearly always beats a sprawling version one, both on budget and on user adoption.
Ongoing costs after launch
The build price is not the whole story. Budget for these recurring costs:
- Hosting and infrastructure: typically £50 to £500+ per month depending on user numbers and data volumes.
- App store fees: Apple charges £79 per year for a developer account; Google charges a one-off $25. Both take a commission on in-app purchases.
- Maintenance and updates: iOS and Android each release major versions annually, and your app will need updates to stay compatible. A sensible budget is 15 to 20 percent of the build cost per year.
- Third-party services: push notifications, analytics, crash reporting, and mapping services all have usage-based pricing that grows with your user base.
A good development partner will set these expectations up front rather than surprising you after launch.
How to compare app development quotes
When you have quotes from two or three companies, compare them on scope, not just the bottom line:
- Is discovery included? A proper project starts with workshops to define scope, user journeys, and technical approach. If a quote skips straight to a price, the scope is a guess.
- What exactly is included? Design, backend, admin tools, testing, app store submission, and post-launch support should all be itemised. "App development" as a single line is a red flag.
- Who owns the code? You should own the intellectual property outright on final payment. Check the contract.
- What does support look like? Ask about response times, bug fix arrangements, and what happens when a new iOS version breaks something.
- Can you speak to previous clients? Real references and published case studies tell you far more than a portfolio page.
Frequently asked questions
How much does it cost to make an app in the UK?
In 2026, most UK business apps cost between £15,000 and £150,000 to build. Simple apps with few screens and no backend start around £15,000 to £35,000, mid-complexity apps with accounts and integrations run £35,000 to £80,000, and complex platforms with real-time features or heavy integration typically cost £80,000 or more.
Why do app development quotes vary so much?
Quotes vary because companies interpret loosely defined requirements differently, use different rates, and include different things. One quote may include discovery, backend, admin tools, and support while another covers only the app screens. Always compare itemised scope, not the headline figure.
Is it cheaper to build for iOS and Android at the same time?
Yes, if you use a cross-platform framework such as React Native or Flutter, one codebase serves both platforms and typically costs 30 to 40 percent less than two separate native builds. Native development still makes sense for apps needing deep hardware access or maximum performance.
How much does it cost to maintain an app?
A sensible maintenance budget is 15 to 20 percent of the original build cost per year. This covers compatibility updates for new iOS and Android versions, bug fixes, security patches, and small improvements, plus hosting costs that typically range from £50 to £500+ per month.
How long does it take to build an app?
Simple apps take 6 to 12 weeks, mid-complexity apps 3 to 6 months, and complex platforms 6 months or more. Discovery and design typically account for the first 2 to 6 weeks of any project.
Can I get an app built for under £10,000?
Realistically, only with heavy compromises: a template-based or no-code app, a very narrow feature set, or an offshore team you manage yourself. For a bespoke app built to UK standards with proper testing and support, budgets below £10,000 rarely produce something businesses can rely on.
Getting an accurate price for your app
The ranges in this guide are a starting point, but the only accurate price comes from a conversation about your specific requirements. A good development company will help you define a first version that fits your budget rather than quoting your wish list at maximum scope.
If you are planning an app project, talk to our team for a straightforward, itemised quote, or explore our mobile app development services and case studies to see what we have delivered for businesses like yours.