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Code Craft — web development and digital marketing

App Development Services in the UK: Hire an Expert Today

Ready to launch your app in the UK? British businesses hire our app development service experts for iOS and Android apps from one codebase, with fixed prices in GBP and most of your working day covered. We handle the build, the backend and the store launch.

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Development
App Development — at a glance
Starting from
$899.00one-time
  • One React Native / Flutter codebase — both app stores
  • Backend, auth & push notifications built by the same team
Timeline
MVP typically 8–14 weeks
Ownership
Source code & store accounts — yours

Fixed price, agreed in writing.

Certified, awarded & reviewed
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Services we offer

Everything app development service should include — and usually doesn’t.

iOS + Android together

One cross-platform codebase, two stores — faster shipping, cheaper maintenance.

Native-feel UI

Platform-correct navigation, gestures and haptics that feel truly native.

Backend & APIs

Auth, databases, payments and sync built alongside the app — one accountable team.

Push & engagement

Notifications, deep links and in-app messaging wired for retention.

Store submission

We handle App Store & Play Store review, assets and release management.

Post-launch iteration

Crash monitoring, analytics and fortnightly improvement releases.

App Development in the UK

Why UK businesses hire us for app development service.

We're a remote team based in Lucknow, India. We share most of the UK working day, so calls, reviews and fixes happen during your office hours.

Fixed prices in GBP

Milestones priced in pounds sterling and agreed in writing up front. No day-rate creep and no surprise invoices.

Your hours, not ours

We share most of the UK working day, so demos, reviews and fixes happen while your office is open.

UK GDPR and Children's Code

Consent, data minimisation and privacy-by-default settings, designed with UK GDPR and the ICO Children's Code in mind.

Backend from one team

Auth, payments and sync built alongside the app, backed by our software development team.

Serving clients in the UK: London, Manchester, Birmingham, Leeds, Glasgow, Bristol, Edinburgh, Liverpool and everywhere else, delivered remotely.

App Development Service — A smartphone home screen filled with mobile apps
The results view

One codebase. Both stores. Native feel.

React Native builds that ship to iOS and Android together — with the ratings and retention numbers to prove the approach.

  • Store-ready builds tuned for ratings and retention
  • Push, offline and deep links wired for retention
  • Store submission handled end to end
Why Code Craft

The team serious brands pick for app development service.

We deliver app development service as part of one accountable in-house team — designers, developers and marketers in the same room — across the USA, UK, Canada, UAE, Australia and India. Fixed prices agreed in writing, and you own everything we produce.

6
markets served
Fixed
price, in writing
30 days
notice, no lock-in
A discovery call and a fixed, itemised quote before any work starts
Clickable previews every week, so you steer while we build
A clean launch, full handover and 30 days of post-launch support
Optional monthly care — updates, backups, security and small fixes

Fixed quotes, kept promises

The price you approve is the price you pay — scope changes are agreed in writing before they cost anything.

Senior engineers only

No juniors learning on your budget. The people who quote your project build it.

90+ PageSpeed as standard

Performance budgets are in the contract, not the sales pitch.

You own everything

Code, repos, accounts, designs — full IP assignment from day one.

Weekly clickable demos

See real progress every week; steer while steering is cheap.

A team, not a ticket queue

Named engineers and one point of contact for the whole project — not a different freelancer every sprint.

Trusted by teams across six markets

United States United StatesUnited Kingdom United KingdomCanada CanadaUAE UAEAustralia AustraliaIndia India
Smart investment

Why app development service is one of the smartest investments you’ll make.

Not a cost to minimise — money that comes back, in ways you can point to a year from now.

Lower running costs

Clean, update-safe code and right-sized hosting mean fewer emergency fixes and smaller bills for years, not just at launch.

Built to be found

SEO foundations from the first commit mean the site starts earning organic traffic instead of paying for every visitor.

Grows without a rebuild

Architecture chosen for where you're headed, not just where you are — so success doesn't force a rewrite in year two.

Your team can run it

A CMS or admin your people actually understand cuts your dependency on a developer for every small change.

Fixed price protects your budget

The quote you approve is the price you pay — no scope creep eating a budget you'd earmarked elsewhere.

You own the asset outright

Full IP assignment means the site is a business asset on your books, not something you rent from an agency.

How it works

How we deliver app development service — step by step.

01

Discover & plan

We dig into your goals, market and competitors, then agree scope, timeline and success metrics before any code is written.

02

Design & prototype

Wireframes become polished, on-brand designs you approve up front — no surprises at launch.

03

Build & test

Senior engineers build in weekly sprints with previews you can click, plus QA across devices and browsers.

04

Launch & grow

We deploy, monitor and hand over cleanly — then keep optimising with data from real users.

Tech we use

The stack behind our app development service.

Proven, boring-in-a-good-way technology — chosen for speed, security and long-term maintainability, not résumé décor.

Core Development

  • React Native logoReact NativeOne codebase, both stores
  • Flutter logoFlutterDart cross-platform
  • Swift logoSwiftNative iOS
  • Kotlin logoKotlinNative Android

Backend & Sync

  • Node.js logoNode.jsAPIs & services
  • REST / GraphQL logoREST / GraphQLData layer
  • FiFirebaseAuth, sync & push

Store & Release

  • App Store logoApp StoreiOS review & release
  • Play Console logoPlay ConsoleAndroid distribution
  • Ionic / Capacitor logoIonic / CapacitorHybrid where it fits

Quality & Monitoring

  • CrCrash reportingCaught before reviews mention it
  • PuPush notificationsRetention infrastructure
  • Analytics logoAnalyticsUsage & funnels
Transparent pricing

App Development Service packages & pricing.

Fixed quotes, no hourly surprises — these are honest starting points; your exact quote is itemised free within one business day.

MVP

Validate on both stores

$899.00from · one-time
  • Core features, iOS + Android (cross-platform)
  • Clickable prototype first
  • Backend API & auth included
  • QA across a real device matrix
  • App Store / Play Store submission
  • 30-day post-launch support
Most popular

Growth

A feature-rich product

$2,499.00from · one-time
  • Feature-rich cross-platform app
  • Custom backend, payments & sync
  • Push notifications & deep links
  • Crash monitoring & analytics
  • Store submission & release management
  • 90-day support

Scale

Complex app platforms

$5,999.00from · scoped
  • Complex multi-role app platform
  • Advanced integrations & offline sync
  • Dedicated project management
  • Full observability stack
  • Architecture documentation
  • SLA-backed support options

Prices are honest starting points for typical scope — complex projects are quoted precisely, and the quote is always free.

Deliverables

What lands in your hands.

  • UX flows & clickable prototype
  • iOS + Android builds
  • Backend API & admin
  • Push notifications
  • App Store / Play Store submission
  • Crash & analytics dashboards

Don’t see something you need on this list? Ask — we’ll tell you honestly whether it’s in scope, and quote it if it is.

Our guarantees

Signed into every app development engagement.

  • Fixed quote, no surprises

    The approved price is the final price for the agreed scope.

  • On-time delivery

    A dated sprint plan on day one — and we keep it.

  • 30-day post-launch support

    Bugs and tweaks after launch are on us, not on a new invoice.

  • Your IP, fully assigned

    Everything we make for you belongs to you. In writing.

From the blog

App Development Service insights, free to steal.

The same thinking we bill for, written up properly — guides our clients read before (and after) hiring us.

Everything included

25 things we do inside this service.

Not a menu of upsells — this is the scope we work within. If what you need is on this list, it’s in the quote. If it isn’t, ask and we’ll tell you honestly whether we’re the right people.

App Development — the full scope.

Every capability below is work we do in-house. Nothing is subcontracted, and nothing is a placeholder for a conversation about scope later.

  • In-house team only
  • One accountable contact
  • 25 capabilities, quoted upfront
01

Native iOS

Swift and SwiftUI, through to App Store approval.

What that covers

  • Swift and SwiftUI development
  • Objective-C legacy support
  • iPhone and iPad apps
  • Apple Watch and watchOS apps
  • App Store submission and guideline compliance
02

Native Android

Kotlin and Jetpack Compose, including tablet and TV form factors.

What that covers

  • Kotlin and Java development
  • Jetpack Compose UI
  • Android tablet and TV apps
  • Google Play submission and management
03

Cross-platform and hybrid

One codebase across both stores, when that's the sensible trade.

What that covers

  • React Native development
  • Flutter development
  • Ionic and Capacitor
  • Progressive Web Apps
04

Backend, APIs & app infrastructure

The server side a mobile app needs — data, sync and accounts.

What that covers

  • REST & GraphQL API development
  • Firebase & Supabase backends
  • User authentication & social login
  • Real-time sync & offline storage
  • Cloud functions & serverless
  • Push notification infrastructure
05

App store launch & QA

Getting through review the first time, then keeping the app stable.

What that covers

  • App Store & Play Store submission
  • Store listing & ASO assets
  • Beta testing via TestFlight & Play Console
  • Automated & manual QA testing
  • Crash reporting & analytics setup
  • Staged rollouts & release management

Often combined with

These sit in the same discipline and are usually scoped together — one team, one timeline, one invoice.

How your app development service runs

Your app development service project, stage by stage.

Most agency process diagrams describe the agency. This one describes what lands in your inbox — because that’s the part you can hold us to.

01Stage 01

Discovery & architecture

Before anything is designed, we work out what the thing has to do, what it has to talk to, and what would make it fail.

  • Audit of the existing site, data and integrations
  • Data model and API contracts agreed in writing
  • Technical decisions documented with the reasoning, not just the choice
  • Scope written down and priced — fixed before work starts
You receiveA written scope and fixed price you approve before we begin.
02Stage 02

Design & prototype

Something clickable before anything is built, because changing a prototype costs hours and changing a build costs weeks.

  • Wireframes for the flows that carry the most traffic
  • High-fidelity design in Figma, on-brand and responsive
  • Component library so later pages stay consistent
  • Accessibility checked at design stage (WCAG 2.2 AA), not retrofitted
You receiveAn interactive prototype you can click through and sign off.
03Stage 03

Build

Work ships to a staging link continuously, so you're never waiting until the end to see progress.

  • Staging environment live from week one
  • TypeScript end to end — type errors caught before they ship
  • Version control with reviewable history
  • Weekly progress you can look at, not a status email
You receiveA staging URL that updates as we go, yours to share internally.
04Stage 04

Testing & review

The stage most agencies compress. We test on real devices and fix what we find before you see it.

  • Cross-browser and real-device testing, not just a desktop resize
  • Performance measured against Core Web Vitals thresholds
  • Accessibility audit — keyboard, screen reader, contrast
  • Forms, payments and integrations tested end to end
You receiveA written test report, and a fix list we work through with you.
05Stage 05

Launch

Planned rather than hoped. Redirects mapped first, because a launch that loses rankings costs more than it delivered.

  • 301 redirect map from every old URL
  • DNS, SSL and email deliverability verified before cutover
  • Analytics and Search Console configured and confirmed reporting
  • Rollback plan agreed in advance
You receiveA live site, with the old URLs still resolving to the right pages.
06Stage 06

After launch

Thirty days of fixes at no charge, then whatever ongoing support genuinely suits you — or none.

  • 30 days of post-launch fixes included
  • Handover session, plus documentation you keep
  • All accounts, code and assets transferred to you
  • Optional retainer — no lock-in, 30 days' notice
You receiveFull ownership: code, designs, accounts, documentation.

The AI we actually use.

Not a list of logos to look current. Each of these does a specific job on real client work — and where a model isn’t the right tool, we say so rather than reaching for it.

Productivity01

Research, drafting and analysis

  • Claude logoClaudeAnthropicLong-context code review, technical writing
  • ChatGPT logoChatGPTOpenAIContent drafting, competitor research
  • Gemini logoGeminiGoogleMultimodal — screenshots, video, spreadsheets
Automation02

Workflow and integration

  • Zapier logoZapierNo-code actionsForm-to-CRM routing, lead notifications
  • n8n logon8nOpen-source flowsSelf-hosted pipelines where data can't leave
  • LangChain logoLangChainAgent frameworkRetrieval over a client's own documents
Coding03

In the editor, every day

  • Claude Code logoClaude CodeAnthropicRefactors and migrations across a whole repo
  • Cursor logoCursorMulti-model IDEInline edits with the codebase in context
  • Copilot logoCopilotGitHub · VS CodeCompletion and test scaffolding
Prototyping04

From idea to clickable

  • v0 logov0VercelUI exploration before committing to a direction
  • Figma logoFigmaDesignThe prototype clients sign off on
  • Storybook logoStorybookComponentsEvery component reviewable in isolation
FAQs

App Development Service questions, answered.

Straight answers on app development service — scope, pricing and timelines, no fine print. If yours isn't here, ask us; we reply within one business day.

Still have questions?

Real humans, one business day.

  • No-obligation, fixed quote — free
  • Talk to the team who'll build it
  • Reply within one business day
Where we work
US USUK UKCanada CanadaUAE UAEAustralia AustraliaIndia India

Yes. We're a remote team based in Lucknow, India, building apps for UK businesses from London to Glasgow. Quotes are in GBP, our hours overlap most of your working day, and you get installable test builds every sprint.

Where we work

App Development Service in other countries.

Local pricing, local hours and local know-how for each market we serve, all delivered by the same in-house team.

Ready to talk app development service?

Let's build it together.

Tell us where your app development service project is and where you want it to be — we'll map the route and quote it, free.

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