
Elite Pickleball Coaching
Android coaching app connecting athletes with coaches through video analysis, training programs, and performance tracking.
Intelivita is a leading Flutter app development company in London, UK, that builds custom and high-performance Flutter apps for iOS and Android from a single codebase. We handle the full journey of consulting, custom development, API integration, upgrades, and ongoing support, so UK businesses get consistent UI, predictable timelines, and one team accountable for delivery.
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 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.
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.
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.
Modernise your existing Flutter or native app by migrating it to the latest stable Flutter and Dart standards. We audit the codebase, update dependencies, resolve breaking changes, migrate null safety, upgrade packages and plugins, and refactor code while preserving core functionality. Our team also handles Android and iOS build configurations, Gradle updates, and store-ready builds.
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.
Ready to Build Your Flutter App?
Tell us what you’re building, migrating or improving. Our Flutter team can help define the right approach, integrations and development scope for your iOS and Android application.

Android coaching app connecting athletes with coaches through video analysis, training programs, and performance tracking.

Creating a safe community for shared ostomy support

Android clinical research app enabling participants to track symptoms and contribute to the research data.
Single Codebase for iOS and Android
Flutter allows you to build and manage one shared codebase for both iOS and Android platforms, which reduces duplication and simplifies updates.
Faster Time to Market
Flutter supports hot reload and reusable widgets, which help teams release features quickly and shorten time to market.
Consistent UI Across Platforms
Flutter renders its own UI components, which keep layouts, fonts, and animations consistent on different screen sizes and operating systems.
Cost-Efficient Development Model
A shared codebase allows one development team to manage both platforms, reducing duplicated development and long-term maintenance effort.
Long‑term scalability for businesses
iOS apps support regular updates, feature expansion, and integration with Apple devices and services.
High Performance with Native-Like Experience
Flutter compiles to native code, which supports smooth animations and responsive app behaviour.
Strong Community and Google Support
Google maintains Flutter and releases regular updates, while a large developer community actively contributes to packages and plugins.
Requirement Analysis and Project Planning
UI/UX Design and Wireframing
Flutter App Development
Testing and Quality Assurance
Deployment and Ongoing Support
Connect Flutter apps with scalable backend systems, databases and existing business platforms.
Integrate Firebase services for authentication, real-time data, cloud functionality and app monitoring.
Integrate payment gateways and authentication services to support secure transactions and user access.
Integrate push notifications for transactional messages, user engagement and real-time app updates.
Track app usage, crashes and performance to identify issues and support ongoing product improvements.
Support reliable Flutter app delivery with scalable cloud infrastructure and automated development and deployment workflows.
“After speaking with 50 + agencies, choosing Intelivita was the best decision we made.Their mobile app development expertise and continuous support.”
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“Intelivita developed our mobile apps and website exactly as planned. The quality of the build and the consistent day-to-day support have made a real difference to our business”
Tell us about your idea, existing product or next phase. We'll review your goals, users and essential features, then outline a practical scope, delivery approach, timeline and expected cost with no obligation to proceed.