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iOS & Android · React Native · Flutter

Apps that ship to both stores. Built once.

We build iOS and Android apps using React Native or Flutter where a shared codebase makes sense, and native Swift or Kotlin when performance demands it. The backend and the app come from the same team: no handoffs, no integration surprises.

  • 30+ apps live on both stores
  • Fixed cost from spec sign-off
  • App + backend, same team
Mobile app development at Sky Web Design
App team
30+
Apps shipped to both stores
2
Platforms: iOS & Android, one build
3
Frameworks: React Native, Flutter, native
1
Team for app + backend, no handoffs

Framework

The right mobile app development framework.

We don't push a preferred framework regardless of your needs. We recommend based on your app's performance requirements, timeline and budget. Not sure which fits? A free 30-minute scope call gets you an honest answer, including whether you need an app at all, or whether a progressive web app would serve you better.

React Native (recommended)

JavaScript · TypeScript. Write once, ship to iOS and Android with near-native performance. Huge ecosystem, fast iteration and easy web skill reuse. Our most-used framework.

  • Business apps & dashboards
  • E-commerce & booking platforms
  • Social & community platforms
  • Apps that need web team involvement

Flutter

Dart · Google. Pixel-perfect UI on both platforms from a single Dart codebase. Excellent for highly custom designs and apps where visual consistency across platforms is critical.

  • Custom-designed UI with animations
  • Apps with complex visual interactions
  • Fintech & healthcare UIs
  • When pixel parity between platforms matters

Native

Swift · Kotlin. Pure Swift for iOS, Kotlin for Android. Maximum performance, full platform API access, smallest footprint. Only recommended when performance or hardware requirements demand it.

  • Real-time video / AR / camera apps
  • Apps with deep OS integration
  • High-frequency trading or sensor apps
  • When budget allows separate iOS + Android builds

What we build

Six app categories we know well.

Thirty-plus apps across six verticals. We've solved the hard problems in each category before, so you get patterns that work, not experiments on your budget.

Charity & donation

Native donation flows with Gift Aid declaration, campaign management, push notifications for donor milestones, and integration with SkyDonate or Stripe. Built for UK charities, mosques and nonprofits.

  • Gift Aid
  • Stripe
  • Push notifications
  • Offline-first

Booking & appointments

Clinic, salon and service booking apps with real-time availability, push reminders, Stripe deposits and staff management. Syncs with the Sky Booking plugin or your existing calendar system.

  • Calendar sync
  • Push reminders
  • Payments

E-commerce & retail

WooCommerce-backed mobile shop with native checkout, Apple Pay, Google Pay, product browsing, push promotions and loyalty features. Offline browsing with sync on reconnect.

  • WooCommerce
  • Apple Pay
  • Google Pay
  • Loyalty

Learning & training

Course delivery apps with video lessons, progress tracking, certificate generation and offline content. Integrated with your LMS, or WordPress with WooCommerce for course sales.

  • Video
  • Offline content
  • Certificates
  • Progress

Community & membership

Member-only apps with authentication, profiles, forums, messaging, events and subscription-gated content. Built on your existing WordPress membership plugin or a custom REST API backend.

  • Auth
  • Messaging
  • Events
  • Subscriptions

Business & internal tools

Field team apps, admin dashboards, reporting tools and CRM companions. Replace spreadsheets and paper-based processes with a purpose-built app that talks to your existing backend.

  • Offline-first
  • REST API
  • Reporting
  • Roles

What's included

Design to App Store: quoted to scope.

Every app engagement is scoped before build starts, with the quote based on features, integrations, backend needs and store submission requirements.

You talk to the engineer writing your code. The same team that designs the screen builds the component, wires the API and submits the binary to the store. One point of accountability from spec to live.

Start your app
  • UI/UX design in FigmaWireframes → high-fidelity → dev handoff.
  • Cross-platform buildiOS + Android from a single codebase.
  • Backend / APIWordPress REST, custom Node or Supabase.
  • Push notificationsFCM + APNs: transactional and marketing.
  • Store submissionApp Store & Play Store: we handle the review.
  • Security & authJWT / OAuth2, biometric login, encrypted storage.
  • Offline-first architectureAsyncStorage / SQLite: works without signal.
  • Analytics + crash reportingFirebase Analytics, Sentry, custom events.

Technical capabilities

The hard problems we've solved before.

Every mobile category has its own set of tricky integrations. Here's where we have deep, proven experience.

Payments & in-app purchase

Stripe, Apple Pay, Google Pay, GoCardless Direct Debit, and Apple/Google in-app purchases. Recurring subscriptions with smart retry. Deposit flows for bookings. PCI-compliant tokenisation: card data never touches your server.

Push notifications

FCM for Android and APNs for iOS. Rich notifications with images and action buttons. Deep-link routing from notification tap straight to the relevant screen. Segmented campaigns via your backend or Mailchimp.

Offline-first

AsyncStorage, SQLite via WatermelonDB, and Redux Persist for optimistic UI with background sync. Field workers, charity collectors and clinic staff use apps in areas with no signal: your app should still work.

Auth & security

JWT, OAuth2, Apple Sign In, Google Sign In and biometric authentication (Face ID / Touch ID / fingerprint). Secure Enclave storage for tokens. Two-factor via SMS or TOTP. Role-based access within the app.

Maps & location

Google Maps and Mapbox for salon locators, service area maps and delivery tracking. Background geolocation for field team apps. Geofencing for proximity triggers and location-based push notifications.

Backend integration

WordPress REST API, custom Node/Express APIs, Supabase, Firebase and GraphQL. We build the backend alongside the app, so there is no bottleneck between two teams. Shared Postman collections and TypeScript types generated from your API schema.

Stack

Tools we ship with every day.

The mobile stack is chosen around the product: one codebase when speed matters, native code where the device integration needs it, and a backend built alongside the app.

Cross-platform app build.

React Native or Flutter when one maintainable codebase can serve iOS and Android without sacrificing the core customer experience.

  • React Native
  • Flutter
  • TypeScript
  • Swift
  • Kotlin

Backend and payment flows.

WordPress REST, custom APIs, Stripe, subscriptions and secure media storage, connected by the same team building the app interface.

  • WordPress
  • Stripe
  • Amazon S3
  • REST

Release and feedback loop.

Design, sprint planning, CI, crash reporting and analytics are wired in from day one, so launches are controlled and improvements are visible.

  • Figma
  • GitHub Actions
  • Sentry
  • Linear

App delivery layer

Prototype, build, submit and support.

We handle the parts around the code as well: store assets, TestFlight builds, Play Console setup, analytics events and the first post-launch fixes.

  • PrototypeFigma flows before code.
  • API contractShared schemas and typed responses.
  • QA devicesReal iOS and Android checks.
  • Store prepListings, review notes and builds.
  • AnalyticsEvents that show what users do.
  • SupportLaunch warranty and update path.

Deliverables

What you get at the end of every build.

DeliverableWhat you get
DesignFull Figma file: wireframes, hi-fi screens, component library, auto-layout, and a dev-mode spec with spacing, fonts and colour tokens
Source codePrivate GitHub repository: full source, branching strategy, commit history and a README with local setup instructions
iOS appSigned .ipa submitted to App Store Connect. We handle certificates, provisioning profiles and review correspondence
Android appSigned .aab (Android App Bundle) submitted to Google Play Console: internal test → closed test → production release track
Backend / APIDeployed and documented REST API: Postman collection, endpoint reference, authentication guide and database schema
CI/CD pipelineGitHub Actions workflow for automated builds. A push to main triggers TestFlight + Play internal track distribution automatically
MonitoringSentry crash reporting, Firebase Analytics event schema and backend uptime monitoring, all configured and tested before launch
DocumentationLoom walkthrough for your team, admin guide for any CMS content management, and a release checklist for future updates
Bug warranty30-day post-launch bug warranty: anything that doesn't work as specced is fixed at no extra cost

Process

From idea to both stores in five stages.

Every app engagement follows the same structured path, so you always know where things stand and what comes next.

  1. 1

    Scope call

    Free 30 minutes. We assess whether you need an app, which platform and which framework, and give you a ballpark. No pitch deck, just honest answers.

  2. 2

    Spec & design

    Screen-by-screen wireframes, then high-fidelity Figma designs. User flows, edge cases, component library. You approve before any code is written.

  3. 3

    Build

    Weekly staging builds you can install on your device. Shared Linear board. You see and test every screen before we move on. Fixed cost from spec sign-off.

  4. 4

    QA & testing

    Device testing across iOS and Android, performance profiling, accessibility audit, crash monitoring setup, and App Store / Play Store metadata preparation.

  5. 5

    Ship & support

    We handle both store submissions, including any review rejections. 30-day bug warranty after launch. Optional ongoing retainer for updates and new features.

FAQ

Questions we get every week.

Something else on your mind?

Ask us directly

The timeline depends on the project's complexity. A typical mobile app takes 10–16 weeks, while larger apps with custom features, integrations or complex workflows may take longer.

Yes. You'll need your own Apple Developer and Google Play Developer accounts so you retain full ownership of your app. We help you set them up and manage the entire submission process.

Yes. We develop both the mobile application and the backend API. If you already have an existing backend, we can integrate with it instead.

We handle the review process, respond to store feedback, make any required changes, and resubmit the app until it meets the platform's requirements.

Yes. We offer ongoing maintenance, feature development, bug fixes, performance improvements and compatibility updates for new iOS and Android releases.

Absolutely. Once the project is complete, you receive full ownership of the source code, design files, documentation and app store assets.

Pricing is based on your app's features, integrations, design requirements, backend functionality and overall complexity. We provide a tailored quotation after discussing your project.

Yes. We can connect your mobile app to WordPress, WooCommerce, membership systems, CRMs, custom APIs and other existing business platforms.

Yes. We build cross-platform applications that run on both iOS and Android from a single codebase, reducing development time while maintaining a native user experience.

We build business apps, e-commerce apps, booking systems, charity and donation apps, healthcare solutions, education platforms, membership apps, customer portals and other custom mobile applications tailored to your business goals.

Ready to ship your app
to both stores?

Book a free 30-minute scope call. We'll assess your requirements, recommend the right framework and give you a realistic budget: no pitch, no pressure.

07495 462515info@skywebdesign.co.uk

Sky Web Design

Sky Web Design Verified

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