Mobile app development company in the UK
Apps that hold up at peak hour, and keep customers coming back.
iCoderz builds AI-native iOS, Android and cross-platform apps for startups, growing companies and enterprises in London, Manchester and Birmingham and across the UK, from the first prototype to App Store launch and beyond.
Bespoke mobile apps for UK businesses.
Whether you are a startup launching your first MVP or an established business going mobile-first, we build bespoke iOS, Android and cross-platform apps for companies across London, Manchester and the rest of the UK.
We design and build those apps for UK startups, SMEs and enterprises with a senior team that owns the outcome: a fixed, itemized quote, a working build every two weeks and calls scheduled within your UK working day.
Bespoke apps
Custom apps designed around your customers and processes, not templates.
Fixed price or flexible hiring
A fixed, itemized quote, or a dedicated team that scales with you.
UK GDPR ready
Consent, data handling and hosting designed for UK GDPR.
Everything a serious mobile product needs.
Product thinking, design, engineering, release and growth, owned by one senior team from the first workshop to the hundredth release.
Product discovery
Workshops that turn an idea into a prioritized roadmap, user flows and a release plan your investors and team can follow.Native iOS and Android
Swift and Kotlin apps for products where performance, device features and platform feel matter most.Cross-platform apps
One Flutter or React Native codebase for both stores, without trading away speed or a native look and feel.Multi-app ecosystems
Customer, rider, merchant and admin apps that share one backend and stay in sync in real time.Backend and integrations
APIs, payments, maps, messaging and POS or ERP integrations, built to scale with your user base.Release and growth
Store submission, analytics, crash monitoring and a steady release rhythm after launch.Explore our mobile app development services.
iOS Development
↗Android Development
↗Flutter Development
↗React Native
↗Cross Platform
↗
Why UK businesses choose iCoderz for mobile app development
Built for real-world load
Our apps power restaurant chains and multi-vendor marketplaces where order spikes, weak networks and older phones are everyday conditions.Delivery domain depth
Live tracking, dispatch, wallets and payouts are problems we have solved repeatedly, so your budget goes into what makes your product different.Senior-led, AI-native delivery
Architects and senior engineers lead every build, using AI tooling for reviews, tests and documentation, with people accountable for every decision.Ownership without lock-in
Clean architecture, documentation and a full handover. You own the code, the accounts and the roadmap.Who we build mobile app products for
On-demand platforms built on our mobile engineering.
Tools and technologies we use for mobile app projects.
SwiftSwiftUI
KotlinJetpack Compose
Flutter
React NativeDartTypeScript
Node.js
Laravel
Firebase
PostgreSQL
AWS
Google CloudFastlane
GitHub ActionsHow much does mobile app development cost?
The cost of mobile app development depends on what you need. After a free discovery call we share a fixed estimate broken down by milestone, so there are no surprises.
Features & complexity
Number of screens, user roles and business rules.Platforms
iOS, Android, web, admin panel, or all of them.Integrations
Payments, maps, CRMs, ERPs and third-party APIs.Design depth
Custom UI, animations and design system.Team & timeline
Team size and how fast you need to launch.Support after launch
Maintenance, hosting and new features.Fixed, itemized quote
Broken down by milestone and featureWithin 48 hours
After a free discovery callNDA from day one
Your idea and code stay yoursThree ways to work with us.
Product build
A senior team takes your product from discovery workshop to launch, with a fixed plan, clear milestones and a working build to review every two weeks.
Managed product team
A cross-functional iCoderz team (product lead, designer, engineers and QA) owns your roadmap with you and ships continuously, with one accountable delivery lead.
Modernize & scale
We audit your current platform, fix what slows you down, and rebuild or extend it for scale, without stopping your business.
A clear process, from first call to launch.
Discover
Workshops to agree goals, scope and success metrics.Design
UX flows, UI design and clickable prototype.Build
Two-week sprints with demos you can try.Test
Manual and automated QA on real devices.Launch
Store, server and analytics setup, done for you.Support
Monitoring, updates and new features.Mobile platforms we have built and still support.
What clients say about working with iCoderz.
Independent, verified reviews from founders and product leaders we have worked with since 2011.
“We worked closely with their team and were delighted with the results.”
“They were transparent and easy to connect with, and they met all of our expectations.”
“They were reliable, quick, and customer-oriented.”
Mobile app development in the UK: FAQs
How much does it cost to build a mobile app in the UK?
It depends on the number of apps, features, integrations and design depth. After a discovery call we share a proposal with scope, milestones and a feature-by-feature estimate, so you can compare it with UK agencies on the same scope.
How long does mobile app development take?
A focused first release usually takes a few months. Multi-app platforms take longer. You get a release plan with dates after discovery, and a working build every two weeks.
Do you design apps for UK GDPR?
Yes. We design consent, data minimization, access control and deletion flows for UK GDPR, and can host data in UK cloud regions.
Can a UK company work smoothly with your team in India?
Yes. We work with clients in the UK and around the world, and schedule calls, reviews and releases within your UK working day. Your product lead is available on Slack, email and video calls.
Can I hire a dedicated team or developer for my project?
Yes. You can hire a dedicated team or individual developers who work only on your project until it is delivered, and you can manage them yourself if you have a CTO.
Do you offer fixed-price projects?
Yes. After discovery we give you a fixed, itemized quote, or you can hire a dedicated team on a monthly basis.
Should we build native or cross-platform?
Native Swift and Kotlin suit apps that rely heavily on device features or performance. Flutter or React Native suit most products that need iOS and Android from one codebase. We recommend the right option after discovery.
Who owns the code and the store accounts?
You do. The source code, IP and App Store and Google Play accounts are yours from day one, and we sign an NDA before we discuss details.
Do you support the app after launch?
Yes. We offer monitoring, bug fixes, OS updates and new feature releases under a support plan that fits your stage.
Let’s engineer an app your UK customers rely on.
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