How Much Does Mobile App Development Cost in the UK? (2026 Guide) | Launchwork Digital

**Quick answer:** Mobile app development in the UK costs between £15,000 and £150,000+ depending on platform, feature complexity, and team type. A simple single-platform app with core features runs £15,000–£35,000. A complex multi-platform app with custom backend, third-party integrations, and real-time functionality costs £60,000–£150,000+. React Native apps typically cost 30–40% less than separate native iOS and Android builds delivering equivalent functionality.

The UK app development market has consolidated significantly since 2023. Agencies that survived the AI coding tool wave are delivering more complex apps at similar price points — but the range between freelancer-built apps and agency-built enterprise apps has widened. This guide gives you the numbers you need to budget accurately and ask the right questions.

What Determines Mobile App Development Cost in the UK Five factors drive app development cost more than anything else: **1. Platform choice.** Building for iOS only is cheaper than Android only, which is cheaper than both natively. React Native (build once, deploy to both) sits between "iOS only" and "both native" in cost — typically saving 30–40% versus separate native builds while accepting minor performance trade-offs. **2. Feature complexity.** Authentication, push notifications, and a few static screens are cheap. Real-time features (live chat, location tracking, collaborative editing), payment processing, offline-first architecture, and complex animations are expensive. Every feature that requires a backend API adds cost at the server layer. **3. Design requirements.** Apps with custom UI/UX design (bespoke animations, complex navigation patterns, branded design systems) cost 40–80% more than apps built with platform-standard components. If your designs are already done, development-only quotes will be significantly lower. **4. Backend and integrations.** Many apps need a backend: user accounts, database, admin dashboard, push notifications, and third-party integrations (payment processors, CRMs, mapping APIs, social login). The backend often costs as much as the app itself for feature-rich products. **5. Team type.** A solo freelancer costs £300–£600/day. A specialist UK app development agency costs £600–£1,200/day. Offshore development (India, Eastern Europe via a UK agency) costs £200–£450/day equivalent. Each option has a different risk profile — see the comparison table below.

UK App Development Cost by App Type | App Type | iOS Only | Android Only | Both (React Native) | Both (Native) | |----------|----------|--------------|--------------------|--------------:| | MVP / prototype | £12,000–£20,000 | £10,000–£18,000 | £15,000–£25,000 | £20,000–£35,000 | | Simple app (auth, 5–10 screens) | £20,000–£35,000 | £18,000–£30,000 | £25,000–£40,000 | £35,000–£55,000 | | Medium app (backend, integrations) | £35,000–£70,000 | £30,000–£65,000 | £45,000–£80,000 | £55,000–£100,000 | | Complex app (real-time, marketplace) | £70,000–£120,000 | £65,000–£110,000 | £80,000–£130,000 | £100,000–£150,000+ | *Prices are typical UK agency rates for 2026. Freelancer costs run 30–50% lower with higher delivery risk. Add 15–25% for post-launch maintenance year 1.*

React Native vs Native: The Honest Cost Comparison React Native is a cross-platform framework that compiles to native code for iOS and Android. It's the dominant choice for UK agencies building apps for SMBs and startups in 2026. **Choose React Native when:** - Your budget is under £100,000 for a dual-platform app - You don't need platform-specific hardware access (Face ID biometrics, deep ARKit/ARCore, custom Bluetooth protocol) - Your team wants a shared JavaScript/TypeScript codebase - Speed to market matters more than micro-optimised performance **Choose native iOS + Android when:** - You need maximum performance (games, real-time video processing, hardware-intensive features) - You're building a flagship product where 10ms UI jank is unacceptable - You have different feature sets planned for iOS and Android - Your budget allows the 30–40% premium and longer timeline For most UK business apps — booking systems, customer portals, field service tools, e-commerce companions — React Native delivers the same user experience at meaningfully lower cost. The performance difference is imperceptible in typical business app use cases.

Freelancer vs Agency vs Offshore: UK Cost Comparison | Factor | Freelancer | UK App Agency | UK Agency + Offshore Dev | |--------|-----------|----------------|---------------------------| | Day rate equivalent | £300–£600 | £700–£1,200 | £450–£750 | | Simple app (10 screens) | £10,000–£20,000 | £25,000–£40,000 | £15,000–£28,000 | | Project management | Self-manage | Included | Partial | | Design included | Rarely | Usually | Sometimes | | Post-launch support | Variable | Retainer available | Variable | | IP & contract protection | Depends on freelancer | Full contractual protection | Depends on agreement | | Risk | High (single point of failure) | Low | Medium | **The right choice depends on your risk tolerance and complexity.** A well-specified, straightforward booking app with a competent freelancer can save £15,000+. A complex, business-critical app where downtime costs money belongs with an agency.

Hidden Costs UK Businesses Miss ### Apple Developer Program and Google Play Before you can publish, you need: - **Apple Developer Program:** £79/year (UK pricing as of 2026). Apple's review process typically takes 1–3 days but rejections during the first submission extend timelines significantly. - **Google Play Developer Account:** One-time $25 (approximately £20). Android submissions are reviewed in 3–7 days. ### Backend Infrastructure Most apps need a backend. Cloud hosting for a small production app typically costs £30–£200/month on AWS, Google Cloud, or Azure depending on traffic. If your agency builds a custom backend, factor in this ongoing cost from day one. ### App Store Optimisation (ASO) Getting downloads requires App Store Optimisation — keyword research, screenshots, preview videos, and review generation. Budget £1,000–£3,000 for initial ASO work post-launch, then ongoing management if you're running a commercial app. ### Maintenance and Updates Apple and Google release major OS updates annually. Apps that aren't maintained break. Budget 15–25% of your build cost annually for maintenance: OS compatibility updates, security patches, bug fixes, and minor feature additions. For most apps, we recommend a monthly maintenance retainer of £300–£1,000 depending on app complexity. See our [website maintenance guide](/blog/website-maintenance-uk-guide) for what to look for in a support contract — the same principles apply to app maintenance. ### Testing Devices Professional testing requires real devices across multiple OS versions. Good agencies include this in their delivery process. Ask explicitly whether your quote includes device testing or emulator testing only — there is a meaningful quality difference.

How to Get an Accurate UK App Development Quote **Step 1: Document your requirements.** Create a simple list: what the app does, who uses it, what platform (iOS/Android/both), and which features are must-haves vs nice-to-haves. The clearer your requirements, the more accurate the quote. **Step 2: Clarify what's included.** Does the quote include UI/UX design? Backend development? App Store submission? One month of post-launch bug fixing? These line items vary enormously between agencies. **Step 3: Ask about the technology stack.** React Native, Swift, Kotlin — get a straight answer. An agency that can't explain their technology choice clearly may not have the expertise your project needs. **Step 4: Understand the payment structure.** Most UK agencies work on milestone-based payments: a deposit (typically 25–33%) at project start, then payments at defined delivery milestones. Avoid agencies requiring full payment upfront. **Step 5: Request client references.** Specifically ask for clients whose apps have been live for 12+ months. You want to know how the agency performs after launch, not just at handover. For a full evaluation framework, our [guide to choosing a web design agency](/blog/how-to-choose-web-design-agency-uk) covers the same principles — portfolio review, pricing transparency, communication process, and post-launch support — all directly applicable to choosing an app developer.

Frequently Asked Questions **How much does it cost to build a simple app in the UK?** A simple app — authentication, 5–10 screens, basic data storage, no real-time features — typically costs £20,000–£35,000 with a UK agency for iOS only, or £25,000–£40,000 with React Native for both platforms. Freelancer rates can reduce this to £12,000–£20,000 with higher delivery risk. Factor in backend hosting (£30–£100/month ongoing) and App Store fees. **How long does app development take in the UK?** A simple app (5–10 screens, basic features) takes 8–14 weeks with a UK agency. Medium-complexity apps take 16–24 weeks. Complex apps (real-time features, marketplace functionality, large backend) take 6–12 months. Add 4 weeks for App Store review processes, especially for the first iOS submission. **Is React Native cheaper than native iOS and Android development?** Yes, typically 30–40% cheaper for equivalent functionality on both platforms. Rather than building and maintaining two separate codebases in Swift and Kotlin, React Native uses a shared JavaScript/TypeScript codebase that compiles to native code. The cost saving is real but comes with trade-offs: slightly lower performance ceiling, more difficult to implement platform-specific features, and dependence on Meta's open-source framework. **What's the cheapest way to build an app for a UK business?** The cheapest route is using a no-code or low-code platform (Glide, Bubble, Adalo) for simple apps — costs can run £2,000–£8,000 for basic functionality but are not suitable for complex features or high-volume traffic. For custom-built apps, using an experienced freelancer on a well-specified project is the most cost-effective option, typically 30–50% less than an agency. **Do I own the code after the app is built?** You should. Ensure your contract explicitly states that all intellectual property — source code, designs, documentation — transfers to you on final payment. Some agencies retain IP until final payment; others offer SaaS-style hosting where they maintain the code. For a business-critical app, insist on full source code ownership and hosting independence. **Can Launchwork Digital build my mobile app?** Yes. Our [app development services](/services/mobile-apps) use React Native and native development to build iOS and Android apps for UK businesses. We work through a structured process: scoping and requirements (1–2 weeks), UI/UX design (2–4 weeks), development in sprints (8–16 weeks), testing (2–3 weeks), and App Store submission. We provide a detailed, itemised quote after a free scoping call — no obligation, no pressure.

Contact our team to discuss your app idea and get a realistic timeline and budget. Or explore our app development services page to see our technology stack and approach. **Related reading:** - App Development Services — Our approach and technology stack - How to Choose a Web Design Agency — Evaluation framework - Website Maintenance UK — Support contract guidance - AI Integration Services — Adding AI features to your app