Whether you are a startup founder with a consumer app idea or a business owner looking to digitise operations, understanding mobile app development costs in the UK is essential for planning your investment. This guide covers everything you need to know: iOS vs Android vs cross-platform pricing, cost breakdowns by app type, and practical strategies for getting the best value.
Mobile App Development Cost: Summary
UK mobile app development costs in 2026, by complexity:
- Simple mobile app (content display, basic forms, limited interactivity): £8,000 – £22,000
- Medium mobile app (user accounts, API integrations, payments, push notifications): £22,000 – £60,000
- Complex mobile app (real-time features, AI, marketplace, multi-role): £60,000 – £150,000+
These figures assume a UK-based development team delivering design, development, testing, and deployment. They cover a single platform; multiply by approximately 1.6–1.8x for two separate native builds, or add only 10–20% for cross-platform (Flutter or React Native).
iOS vs Android vs Cross-Platform: The Cost Comparison
This is the most impactful decision you will make early on. Here is a straightforward comparison for a medium-complexity app:
iOS Only (Swift / SwiftUI)
Cost: £22,000 – £55,000
Advantages: Best performance on Apple devices, access to the latest iOS features immediately, strong App Store discoverability. Best for: consumer apps targeting UK audiences (iPhone market share is approximately 50% in the UK), apps that leverage Apple ecosystem features (HealthKit, ARKit, Apple Pay).
Android Only (Kotlin)
Cost: £20,000 – £50,000
Advantages: Larger global user base, more flexible distribution (sideloading, alternative stores), lower device cost for testing. Slightly cheaper than iOS development due to less stringent design requirements. Best for: apps targeting price-sensitive markets, enterprise apps distributed via MDM, apps with significant international reach.
Cross-Platform: Flutter (iOS + Android)
Cost: £22,000 – £55,000
Advantages: Single codebase for both platforms, near-native performance, beautiful custom UI, strong and growing ecosystem. Costs roughly the same as a single native app but delivers two platforms. Best for: most startups and SMEs that need both platforms. This is our recommended approach at GuruSoftwares.
Cross-Platform: React Native (iOS + Android)
Cost: £24,000 – £58,000
Advantages: JavaScript-based (large talent pool), strong community, used by major companies. Slightly higher cost than Flutter due to more platform-specific workarounds needed. Best for: teams with existing JavaScript expertise, apps with simpler UI requirements.
Two Separate Native Apps (iOS + Android)
Cost: £38,000 – £100,000
Double the development, double the testing, double the ongoing maintenance. Justified only when you need cutting-edge platform-specific features on both platforms simultaneously, which is rare for most business apps.
Cost Breakdown: Where Does the Money Go?
For a medium-complexity mobile app, here is a typical cost allocation:
Strategy and Planning (5–8% of budget)
£1,500 – £4,000. User research, feature prioritisation, technical planning, project roadmap. This phase ensures you build the right thing, not just build something.
UX/UI Design (15–20% of budget)
£4,000 – £12,000. User flow mapping, wireframes, visual design, interactive prototypes. Mobile design requires particular attention to thumb-friendly navigation, performance perception, and platform-specific design patterns (Material Design for Android, Human Interface Guidelines for iOS).
Frontend / App Development (35–40% of budget)
£8,000 – £22,000. Building the screens, navigation, animations, local data handling, and platform integrations. This is the visible part of the app that users interact with.
Backend Development (20–30% of budget)
£5,000 – £18,000. APIs, database, authentication, business logic, file storage, and third-party integrations. Some apps can use Backend-as-a-Service (Firebase, Supabase) to reduce this cost significantly.
Testing and QA (10–15% of budget)
£3,000 – £8,000. Device testing, performance testing, security testing, and user acceptance testing. Mobile apps require testing across multiple device sizes, OS versions, and network conditions.
Deployment and Launch (3–5% of budget)
£1,000 – £3,000. App Store and Play Store submission, metadata and screenshots, production environment setup, monitoring configuration. Apple's review process can take 1–7 days, so factor this into your launch timeline.
Mobile App Cost by Category
E-Commerce Mobile App
Product browsing, search, cart, checkout, order tracking, push notifications, wish lists. £25,000 – £65,000. Timeline: 8–14 weeks. Consider whether a mobile app is necessary or whether a responsive web app (PWA) would suffice for your early stage.
On-Demand Delivery App
Customer ordering app + driver/provider app, real-time GPS tracking, route optimisation, in-app payments, rating system, admin dashboard. £35,000 – £90,000. Timeline: 12–20 weeks. The real-time and multi-app nature drives cost up.
Health and Wellness App
User profiles, tracking features (exercise, diet, symptoms), data visualisation, wearable integration, reminders, content library. £20,000 – £55,000. Timeline: 8–14 weeks. Wearable integration (Apple Watch, Fitbit) adds complexity.
Social Networking App
Profiles, content feeds, photo/video sharing, messaging, notifications, content moderation, reporting. £30,000 – £80,000. Timeline: 10–18 weeks. Media handling and real-time messaging are the primary cost drivers.
Business / Productivity App
Task management, team collaboration, document sharing, calendar integration, offline support. £20,000 – £50,000. Timeline: 8–14 weeks. Offline-first architecture adds significant complexity if required.
Fintech / Banking App
Account views, transactions, Open Banking API integration, biometric authentication, security features, FCA compliance. £40,000 – £120,000. Timeline: 14–24 weeks. Regulatory compliance is a major cost factor.
Hidden Costs to Budget For
The development quote is not the total cost of ownership. Plan for these additional expenses:
- Apple Developer Account: £79/year (required to publish on the App Store)
- Google Play Developer Account: £20 one-time fee
- Backend hosting: £50–£500/month depending on traffic and data
- Push notification services: Free for low volume (Firebase Cloud Messaging), £50–£300/month at scale
- CDN for media: £20–£200/month if your app serves images or video
- Annual maintenance: 15–20% of initial build cost per year. This covers OS updates (Apple and Google release major OS versions annually), dependency updates, bug fixes, and minor improvements
- App Store Optimisation (ASO): £500–£2,000 for initial optimisation, then ongoing effort
- User acquisition: Highly variable. Organic growth is ideal but slow. Paid acquisition (Google Ads, Meta Ads, Apple Search Ads) typically costs £1–£10 per install depending on category
How to Reduce Mobile App Costs
Build an MVP First
The most effective cost-saving strategy. A mobile app MVP with 3–5 core features costs £8,000–£22,000 and can be live in 3–5 weeks. Compare that to spending £50,000+ on a full app that might not find product-market fit.
Choose Cross-Platform
Unless you have a specific technical reason for native development, Flutter gives you iOS and Android from one codebase at essentially the cost of one native app. The performance difference is negligible for most app categories.
Use Backend-as-a-Service
Firebase, Supabase, or AWS Amplify can dramatically reduce backend development costs for early-stage apps. You trade some flexibility for significant time and cost savings. You can always migrate to a custom backend later.
Prioritise Features Ruthlessly
For every feature, ask: "Will users download and keep the app without this?" If the answer is not a clear yes, it can wait for v2. The App Store is full of failed apps that launched with 50 features instead of 5 great ones.
Work With a Specialist Studio
Large agencies have overhead that inflates costs. Solo freelancers lack the team structure for efficient delivery. A specialist mobile studio like GuruSoftwares hits the sweet spot: lean team, efficient processes, and deep mobile expertise.
The Total Cost of a Mobile App: Year One
Let us put it all together for a medium-complexity cross-platform app:
- Design and development: £30,000 (one-time)
- App Store accounts: £99 (year one)
- Backend hosting (12 months): £2,400 (£200/month)
- Third-party services (12 months): £1,200 (£100/month)
- Maintenance and updates: £5,000
- Total year-one cost: approximately £38,700
From year two onward, your annual cost drops to approximately £8,700 (hosting + services + maintenance), plus whatever you invest in new features and marketing.
Getting an Accurate Quote
Generic cost guides (including this one) give you ranges. To get an accurate number for your specific project, you need a conversation with a development team who can assess your requirements.
At GuruSoftwares, we offer free 30-minute discovery calls. Bring your idea, and we will help you define the right scope, choose the right platform, and give you a fixed-price quote within 24 hours. Visit our pricing page for standard packages, or book a call to discuss your project.