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Mobile App Development

Mobile App Development for Android & iPhone (iOS)

High-performance Android and iPhone apps built with Flutter, Dart, Kotlin and Swift — from idea and UI/UX design to Google Play and App Store launch.

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Android and iPhone app screens with Flutter, Dart, Kotlin, Swift, React Native and Firebase technology labels

Android and iPhone App Development from Idea to Store Launch

Your customers spend most of their screen time inside apps. A fast, well-designed mobile app puts your business on their home screen — making it easier to order, book, pay, track and come back again. Whether you need a customer-facing app, an internal tool for your team or a mobile companion to your website, we build apps people actually enjoy using.

We develop for both Android and iPhone. For most projects we recommend Flutter with Dart, which delivers native-quality performance on both platforms from a single codebase — saving time and budget. When a project calls for platform-specific capabilities, we build fully native apps in Kotlin for Android and Swift/SwiftUI for iOS, and we also work with React Native. Every app comes with the backend, APIs and admin panel it needs, and we handle the complete launch on Google Play and the Apple App Store.

What’s Included

Our Mobile App Development Services

  • Cross-Platform Apps with Flutter

    One Dart codebase for Android and iOS with smooth 60–120 fps animations, native feel and faster, more affordable delivery.

  • Native Android Apps (Kotlin)

    Android apps built with Kotlin and Jetpack Compose that make full use of device hardware and Google services.

  • Native iPhone & iPad Apps (Swift)

    iOS apps in Swift and SwiftUI that follow Apple’s Human Interface Guidelines and feel right at home on iPhone and iPad.

  • App UI/UX Design

    User research, wireframes, interactive prototypes and polished interfaces designed for thumbs, gestures and small screens.

  • Backend, APIs & Admin Panels

    Secure REST/GraphQL APIs, Firebase or Node.js backends, push notifications, payments and a web admin to manage your app.

  • Launch, Maintenance & Updates

    Google Play and App Store submission, crash monitoring, OS-version updates, new features and ongoing technical support.

Cross-Platform Expertise

Flutter, React Native and Kotlin Multiplatform — the Right Stack for Your App

We build Android and iPhone apps with the three leading cross-platform approaches. Each shares code between platforms to save time and budget — the difference is how much is shared and which skills and ecosystem suit your product. We help you choose, then build it properly.

Flutter Dart code for a Riverpod product card beside the same shopping app running on Android and iPhone

One codebase · Android, iOS & Web

Flutter + Dart

Flutter lets us write the entire app — interface and logic — once in Dart and compile it to fast native apps for Android and iPhone. Its own rendering engine gives pixel-perfect, on-brand designs and smooth animations on every device, making it our first recommendation for most business apps.

  • Single Dart codebase for Android, iOS and, optionally, web
  • Custom widgets, Material 3 / Cupertino styling and fluid animations
  • Clean architecture with Riverpod or BLoC state management
  • Firebase, REST/GraphQL, payments, maps and device features via plugins
  • Flutter
  • Dart
  • Riverpod
  • BLoC
  • Firebase
  • Codemagic
React Native TypeScript workout list code using React Query beside the workout app on Android and iPhone

JavaScript ecosystem · Native components

React Native + TypeScript

React Native builds real native apps using React and TypeScript, rendering platform-native components on Android and iOS. It is a strong choice when you already have a React web app or team, want to share logic with your website, or rely on the wider JavaScript ecosystem.

  • Type-safe React Native apps written in TypeScript
  • Expo or bare React Native projects with over-the-air updates
  • Shared business logic and API clients with your React website
  • React Query, navigation, push notifications and native modules
  • React Native
  • TypeScript
  • Expo
  • React Query
  • React Navigation
  • Node.js
Kotlin Multiplatform shared repository code with Jetpack Compose and SwiftUI screens showing the same orders list

Shared Kotlin logic · Native UIs

Kotlin Multiplatform

Kotlin Multiplatform shares the business logic — networking, data, validation and rules — in Kotlin, while each platform keeps a fully native interface: Jetpack Compose on Android and SwiftUI on iOS (or Compose Multiplatform to share the UI too). Ideal when you want native look and feel with one source of truth for your logic.

  • Shared Kotlin module for networking, storage and business rules
  • Native Jetpack Compose (Android) and SwiftUI (iOS) interfaces
  • Ktor networking, SQLDelight storage and coroutines
  • Gradual adoption inside existing native Android and iOS apps
  • Kotlin Multiplatform
  • Kotlin
  • Jetpack Compose
  • SwiftUI
  • Ktor
  • SQLDelight

Benefits

Why Build Your App With WebCentauri?

  • One partner for design, app development, backend, website and launch — no hand-offs between agencies.
  • Flutter-first approach that reaches Android and iPhone users with one codebase and lower cost of ownership.
  • Native Kotlin and Swift expertise whenever your app needs deep platform features.
  • Secure authentication, encrypted data handling and store-compliant privacy practices built in.
  • Transparent milestones, regular test builds on your own phone, and support long after launch.

Technologies Used for Mobile App Development

  • Flutter
  • Dart
  • React Native
  • TypeScript
  • Expo
  • Kotlin Multiplatform
  • Kotlin
  • Jetpack Compose
  • Swift
  • SwiftUI
  • Firebase
  • Node.js
  • REST & GraphQL APIs
  • SQLite
  • Google Play Console
  • App Store Connect

We recommend the right tools for your goals, budget and team — never a one-size-fits-all stack.

Discuss Your Project

How We Work

Our Mobile App Development Process

  1. Discovery & Consultation

    We learn about your business, audience and goals, review any existing website and agree on clear success criteria.

  2. Strategy & Planning

    We define the sitemap, features, technology stack and timeline, so scope and budget are clear before work begins.

  3. UI/UX Design

    We design wireframes and polished, responsive layouts for your approval, focused on usability and conversions.

  4. Development

    We build with clean, standards-based code, integrate your tools and set up an easy-to-use content editor.

  5. Testing & QA

    We test functionality, speed, security, accessibility and SEO across browsers and devices before launch.

  6. Launch & Support

    We deploy, monitor and fine-tune your site, then provide ongoing maintenance and support as you grow.

FAQ

Mobile App Development FAQs

Do you build apps for both Android and iPhone?

Yes. Most of our apps are built with Flutter, which produces native apps for both Android and iOS from one codebase. We also build fully native Android apps in Kotlin and iOS apps in Swift when a project needs it.

How long does it take to develop a mobile app?

A focused first version (MVP) typically takes 8–14 weeks, including design, development, testing and store submission. Larger apps with complex backends, integrations or multiple user roles take longer. We share a detailed milestone plan after the discovery call.

Should I choose Flutter or native development?

Flutter is the best fit for most business apps: it is fast, looks great and costs less because one codebase serves both platforms. Native Kotlin or Swift makes sense for apps that rely heavily on platform-specific features, advanced background processing or cutting-edge OS capabilities. We recommend the right approach after understanding your requirements.

Do you develop apps with React Native and Kotlin Multiplatform too?

Yes. Alongside Flutter, we build React Native apps in TypeScript and Kotlin Multiplatform apps that share business logic in Kotlin with native Jetpack Compose and SwiftUI interfaces. We recommend the approach that best fits your product, team and existing systems.

Will you publish my app on Google Play and the App Store?

Yes. We prepare store listings, screenshots, privacy details and builds, handle the review process for both Google Play and the Apple App Store, and publish the app under your own developer accounts so you keep full ownership.

Can you build an app for my existing website or online store?

Absolutely. We regularly build mobile apps that connect to existing WordPress, WooCommerce, Shopify and custom platforms through their APIs, so your products, content and customer accounts stay in sync.

Do you maintain and update apps after launch?

Yes. We offer ongoing maintenance that covers crash monitoring, compatibility updates for new Android and iOS versions, security fixes and new features as your app grows.

Explore More

Technologies and services that work well alongside mobile app development.

  • Flutter App Development

    Beautiful, fast Flutter apps written in Dart that run natively on Android and iPhone — and on the web — from a single codebase.

  • React Native App Development

    Cross-platform React Native apps in TypeScript — one codebase for Android and iPhone, with native modules, offline support and over-the-air updates.

  • Android App Development

    Native Android apps built in Kotlin with Jetpack Compose — Material 3 design, background work, offline storage and Google Play release management.

  • iPhone & iOS App Development

    Native iOS apps in Swift and SwiftUI for iPhone and iPad — Human Interface Guidelines design, offline data, App Store submission and review support.

Mobile App Development Enquiry

Tell Us About Your App Requirements

A few details about your Android / iPhone app help us recommend the right approach — Flutter, React Native, Kotlin Multiplatform or native — and prepare an accurate estimate.

  • Reply within 24 hoursA real person reviews every request.
  • Free consultationHonest advice, no obligation.
  • 100% confidentialHappy to sign an NDA.

What happens next?

  1. We review your requirements
  2. We reply with questions or a call slot
  3. You receive a clear, itemised proposal
1 Your project
2 Mobile App Development requirements

App basics

Which platforms? (select all that apply)

Features

Key features (select all that apply)

Design & publishing

Design status
Google Play / Apple developer accounts
3 Budget & timeline
4 Your details

Tick the box and answer one quick question.