Sports
Putting expert pickleball coaching in every player’s pocket
Mobile Apps · Web Apps · Coach Platform · UI/UX
Flutter App Development Company in UK
Intelivita is a leading Flutter app development company in the UK, building custom, high-performance Flutter applications for iOS, Android, and the web from a shared codebase. We support the complete development journey, from initial planning and development through to launch and ongoing support.
Strategy
UI/UX Design
Development
Testing
Launch
Support
Growth
What Flutter app development services do we offer?
Intelivita provides Flutter app development services for UK businesses, covering custom app development, integrations, upgrades, and ongoing support for cross-platform iOS and Android applications.
Flutter App Consulting
APP ARCHITECTURE • STATE MANAGEMENT • TECHNICAL ROADMAP
Our Flutter app consulting service helps validate your app idea and map the right technical approach, from scope, architecture, and API strategy to state management before development starts. As a Flutter app development company, we assess technical feasibility, UI/UX flows, scalability, performance, and integration readiness to create a clear development roadmap for your app.
Custom Flutter App Development
DART • CUSTOM ARCHITECTURE • THIRD-PARTY APIs
Custom Flutter app development covers mobile applications tailored to your specific business model and user requirements. We handle requirement analysis and UI/UX design while creating custom app architecture, Dart-based logic, third-party API integrations, secure backend connectivity, and scalable code structures. Our Flutter engineers build high-performing apps with smooth animations and a consistent user experience across devices.
Flutter App Upgrades & Modernisation
FLUTTER SDK • PACKAGE UPGRADES • CODE REFACTORING
We upgrade and modernise existing Flutter applications to keep them compatible with supported versions of Flutter, Dart, packages, and third-party dependencies. Our developers resolve breaking changes, refactor ageing code and architecture, and update Android and iOS build configurations to improve stability, performance, and maintainability.
Flutter App Migration
CODE MIGRATION • FEATURE PARITY • BACKEND REUSE
We migrate existing native and cross-platform applications to Flutter while preserving relevant functionality and integrations. Whether you need to extend an iOS app to Android, bring an Android app to iOS, or replace outdated hybrid technology, our Flutter developers can reuse existing backend systems and APIs where appropriate.
Flutter iOS & Android App Development
SHARED CODEBASE • NATIVE INTEGRATION • APP STORE DEPLOYMENT
We develop Flutter apps for iOS and Android from a shared codebase while addressing platform-specific requirements. For iOS, we use Cupertino-style widgets, Apple Human Interface Guidelines, Face ID and Touch ID, with App Store submission support. For Android, we apply Material UI patterns, app signing, Android App Bundles (AAB), and Google Play release setup.
Flutter API Development and Integration
REST APIs • GRAPHQL • WEBSOCKETS
Connect your Flutter app with external services, backend systems, and databases through secure API development and integration. We integrate REST APIs, GraphQL, and WebSockets for real-time data exchange, with data mapping and error handling for reliable connectivity. Our team also implements OAuth 2.0, JWT, token refresh, and secure token storage for access control.
Flutter App Maintenance and Support
BUG FIXES • PERFORMANCE MONITORING • DEPENDENCY UPDATES
Keep your Flutter app stable, secure, and compatible with new iOS and Android updates after launch. Our Flutter app developers fix bugs, improve performance, and update Flutter, Dart, and plugins to supported versions, with crash monitoring and issue tracking to identify errors and release issues. We also manage Google Play and App Store releases as platform requirements change.
Our Flutter app development portfolio
Our Flutter app development portfolio showcases the quality of our UI/UX design and technical development across a diverse range of complex applications built for UK businesses.
Healthcare
Turning everyday symptom tracking into meaningful endometriosis research
Mobile Apps · Web Apps · UI/UX
Local Commerce
Connecting university students with rewarding local experiences
Mobile Apps · Web Apps · UI/UX
Ready to Build Your Flutter App?
Tell us about your app idea, existing product, or next development phase. We’ll review your goals, users, and essential features, then outline a practical scope, delivery approach, timeline, and estimated cost—with no obligation to proceed.
What are the benefits of choosing Flutter for app development?
Flutter provides a shared development framework for building applications across iOS, Android, and the web. UK companies choose Flutter for faster delivery, consistent design, and long-term control over development costs.
Shared Codebase Across Platforms
Build and maintain iOS, Android, and web applications from a shared Flutter codebase.
Faster Development
Hot reload and reusable widgets help teams develop and iterate features faster across supported platforms.
Consistent User Experience
Flutter’s widget system helps maintain consistent layouts, interactions, and visual experiences across supported platforms.
Lower Ongoing Maintenance
Manage updates and improvements through a shared codebase rather than maintaining separate implementations for each platform.
High Performance with Native-Like Experience
Flutter’s compiled architecture supports responsive interfaces and smooth animations across supported platforms.
Flexible Custom Interfaces
Create tailored interfaces and interactions using Flutter’s flexible widget system.
Why choose Intelivita for Flutter app development in the UK?
With 30+ Flutter applications delivered and experience with the framework since 2018, we combine proven Flutter expertise with cross-platform development and long-term support.
30+ Flutter Applications Delivered
30+ Flutter Applications Delivered
We have delivered more than 30 Flutter applications across iOS, Android and web. Our experience covers complex user journeys, custom UI/UX design, secure API integrations and business-specific application workflows.
Flutter Expertise Since 2018
Flutter Expertise Since 2018
Our team has worked with Flutter since its stable production release in 2018, applying that experience to architecture, state management, integrations, performance and long-term application maintainability.
Consistent, Platform-Appropriate Experiences
Consistent, Platform-Appropriate Experiences
We use Flutter’s shared codebase to maintain consistent features and brand experiences across platforms, while adapting navigation, controls and interactions to familiar iOS, Android and web conventions where appropriate.
Complete Flutter Development Partner
Complete Flutter Development Partner
We support the complete Flutter lifecycle—from consulting, architecture and UI/UX design through to development, API integration, testing, deployment, upgrades and ongoing maintenance. All work is delivered by our in-house team, giving you one accountable development partner.
Trusted by Our Clients
Trusted by Our Clients
Our client reviews provide independent feedback on our project management, communication and technical delivery, with verified reviews available on Clutch.
What is our process for Flutter app development?
Intelivita follows a structured Flutter app development process to turn your idea into a scalable iOS and Android application with clear delivery control. The five-step process for Flutter app development is mentioned here:
01
Requirement Analysis and Project Planning
We start by understanding your business goals, target users, and required features. Our team defines the app scope, selects the Flutter approach, and prepares a clear delivery roadmap.
02
UI/UX Design and Wireframing
We design user journeys, screen layouts, and interactive prototypes for Android and iOS standards. We ensure clear navigation, consistent branding, and user interaction of your UI/UX design.
03
Flutter App Development
We build the application using Flutter and Dart with a single codebase for cross-platform delivery. Our developers implement core features, third-party integrations, and secure API connectivity.
04
Testing and Quality Assurance
We conduct functional testing, performance checks, and device compatibility testing across multiple screen sizes. Our QA team ensures stable performance and a consistent user experience.
05
Deployment and Ongoing Support
We prepare the app for Google Play and App Store submission and handle release configurations. After launch, we provide updates, improvements, and maintenance to keep the app secure and scalable.
Flutter technologies & integrations
Intelivita builds connected Flutter applications using the backend systems, APIs, cloud services, payment solutions, and third-party technologies your product requires.
Backend
Connect Flutter apps with scalable backend systems, databases and existing business platforms.
- LARAVEL
- NODE.JS
- .NET
- JAVA
- PYTHON
- PHP
- POSTGRESQL
- RUBY ON RAILS
APIS AND EXISTING SYSTEMS
- REST
- GRAPHQL
- WEBSOCKETS
- CRM
- ERP
- LEGACY SYSTEMS
Application Integrations
Extend Flutter applications with third-party services and platform-specific functionality.
- MAPS
- CHAT
- VIDEO
- NOTIFICATIONS
- ANALYTICS
- SOCIAL LOGIN
Firebase Services
Integrate Firebase services for authentication, real-time data, cloud functionality and app monitoring.
- FIREBASE
- FIRESTORE
- CLOUD FUNCTIONS
- FIREBASE AUTH
Payments & Authentication
Integrate payment gateways and authentication services to support secure transactions and user access.
- STRIPE
- PAYPAL
- APPLE PAY
- GOOGLE PAY
- OAUTH
Push Notifications
Integrate push notifications for transactional messages, user engagement and real-time app updates.
- FCM
- APNS
- ONESIGNAL
Analytics & Monitoring
Track app usage, crashes and performance to identify issues and support ongoing product improvements.
- FIREBASE
- ANALYTICS
- GA4
- CRASHLYTICS
Cloud & DevOps
Support reliable Flutter app delivery with scalable cloud infrastructure and automated development and deployment workflows.
- AWS
- AZURE
- GOOGLE CLOUD
- DOCKER
- BITBUCKET
- GITHUB ACTIONS
Don't See Your Technology?
We can integrate Flutter applications with other platforms, services, and business systems through secure APIs and supported integration methods.
What clients say about Intelivita
“What stood out most about Intelivita was their ability to operate as a true delivery partner rather than just a development vendor. They combined strategic input with hands-on execution, helping shape the product while also building it.”
“Intelivita has developed an app that can dynamically display research questions and support a participant through all stages of their research journey.”
“What stood out most about Intelivita was the balance between professionalism and personal approach, which made the entire development process both efficient and enjoyable.”
Flutter app development FAQs
Common questions about our services, process and approach.
What is Flutter app development, and why is it used for mobile apps?
What is Flutter app development, and why is it used for mobile apps?
Flutter app development means building mobile applications using Flutter, Google’s UI toolkit, and the Dart programming language to create apps for both iOS and Android from a single codebase. It is used for mobile apps because it enables faster cross-platform development, consistent UI rendering, and near-native performance without maintaining two separate codebases.
What is the cost of Flutter app development in the UK?
What is the cost of Flutter app development in the UK?
A Flutter app from Intelivita costs £12,000–£120,000+, excluding VAT. This covers design (£4,000–£20,000) and development (£8,000–£100,000+), including the database, back end, APIs and integrations.
Flutter uses a shared codebase for iOS and Android, making it more cost-effective than building two separate native apps.
Ongoing support costs £400–£2,000 per month, excluding VAT, depending on the complexity of the app and its underlying system.
How long does it take to build a Flutter mobile app?
How long does it take to build a Flutter mobile app?
It takes 6 to 16 weeks, depending on scope. 4 to 8 weeks for a basic app, 8 to 12 weeks for a mid-level app with custom UI and integrations, and 12 to 16 weeks for a complex or enterprise app. As a top Flutter app development company, we extend it more based on your feature depth and integrations.
Can you develop enterprise-grade Flutter applications?
Can you develop enterprise-grade Flutter applications?
Yes, Intelivita develops enterprise-grade Flutter applications for UK businesses that require scalability, security, and system integration. We build Flutter apps with structured architecture, secure API connectivity, role-based access control, and performance optimisation to support large user bases. Our team also integrates enterprise systems such as CRM, ERP, and third-party platforms to ensure operational continuity and long-term growth.
Can Flutter be used for MVP and startup app development?
Can Flutter be used for MVP and startup app development?
Yes, Flutter is well-suited for MVP development and startup app development because it allows you to build and test a product quickly from a single codebase. Flutter helps startups launch an MVP for iOS and Android faster, validate user demand, and reduce initial development costs. Its cross-platform approach makes it easier to iterate features and scale the app after MVP validation.
How secure are Flutter mobile applications?
How secure are Flutter mobile applications?
Flutter mobile applications are considered secure when you apply secure coding, strong authentication, and proper data protection. Security depends more on how the app is built than on Flutter itself. A secure Flutter app uses encrypted network calls (HTTPS/TLS), safe token storage, role-based access, input validation, and secure backend APIs, plus regular updates and security testing.
Can you migrate an existing app to Flutter?
Can you migrate an existing app to Flutter?
Yes, we migrate existing apps to Flutter based on your codebase, feature scope, and release goals. As a Flutter app development company, we assess the architecture, identify reusable components, and rebuild the UI with API alignment, plugin replacement, and store-ready testing for iOS and Android.
Can Flutter be used for web applications?
Can Flutter be used for web applications?
Yes. Flutter can be used to build interactive web applications such as dashboards, portals, and SaaS platforms from a shared codebase. Traditional web technologies may be more suitable for content-heavy websites where search visibility and web-first content delivery are primary requirements.
How does Flutter compare to native app development?
How does Flutter compare to native app development?
Flutter builds iOS and Android apps faster from a single codebase with consistent UI, while native app development needs separate codebases but offers platform-level control. As a Flutter development company, we recommend Flutter for faster delivery and easier maintenance, and native only when you need heavy features or maximum device optimisation.
How does Flutter compare to React Native?
How does Flutter compare to React Native?
Flutter uses Dart and renders its own widgets for pixel-consistent UI in platforms, while React Native uses JavaScript and bridges to native components for a more platform-native feel. As a Flutter app development company, we lean toward Flutter for consistent design, while React Native fits teams already invested in a JavaScript stack.
Why should I choose a Flutter app development company instead of freelancers?
Why should I choose a Flutter app development company instead of freelancers?
You should choose a Flutter app development company over freelancers because you get delivery, a dedicated team, and long-term support, not one person juggling everything with no backup if they drop off. When you hire Flutter developers through a company, you get continuity, lower risk, and a setup built to scale after launch.
How much can I save by using Flutter?
How much can I save by using Flutter?
Flutter can often reduce initial development costs by approximately 20–30% compared with developing separate native iOS and Android apps. Actual savings depend on your app’s features, integrations, complexity, and platform-specific development requirements.
Do you provide post-launch support and maintenance?
Do you provide post-launch support and maintenance?
Yes, we provide post-launch support and maintenance for Flutter mobile applications. We handle bug fixes, performance improvements, security updates, plugin upgrades, and app store compliance after release. Our team supports feature improvements and version updates to keep your app stable and ready for growth.
Is a Flutter application difficult to maintain?
Is a Flutter application difficult to maintain?
No. Flutter applications are generally easier to maintain than separate native iOS and Android apps because most updates can be managed within a shared codebase. Regular Flutter, Dart, dependency, and operating-system compatibility updates are still required.