- Developer
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- CEO/Founder
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- Other
Expert Flutter mobile app development services
We have successfully completed more than 60 Flutter projects
The World’s Leading Flutter Development Company
What do you want to achieve with Flutter?
How to successfully move your existing team to Flutter
If you are Head of IT or a Tech Lead and your IT Team is new to Flutter and you’re looking for ways to transition your existing team to Flutter with additional expertise, then we are happy to help you. Typically, we start with consulting workshops to better understand the goals of your product development efforts. Then, we can structure your app architecture, advise on project organization, and help build foundations for your design system. Our experts can then work hand-in-hand with your team to build the app and transfer knowledge. Alongside development, we run training sessions, workshops, and webinars to upskill your existing team and help them become proficient in using Flutter in the long run.How to scale up the Flutter team
If you already have an initial Flutter team, but their seniority in Flutter is rather low, and you want to increase your production capacity, we can add our experts to your team to streamline the development process. They can help in existing squads or form a new squad and take responsibility for completing new parts of the app.Adding a mobile Flutter app to your existing web portal
Do you have an extensive IT team working on backend and frontend development, but need a mobile Flutter development team? Our Flutter developers can smoothly join your team, take responsibility for the mobile chapter based on Flutter, and bring the required knowledge and experience. Suppose you want to build your new mobile application. In that case, we will help you deliver everything necessary, including UX/UI, mobile app development, quality assurance, and support plans with SLA.How to rewrite an existing application
If your app is outdated and suffers from bad reviews, we can help you get it back on track. This process starts with an audit that lets us understand how much we can reuse and what should be built from scratch.Migrating from Xamarin to Flutter
As Microsoft phases out support for Xamarin, businesses with Xamarin-based apps face a crucial decision. Our service provides professional assistance for seamless app migration to Flutter technology, ensuring continuity and leveraging Flutter's advanced performance capabilities. By transitioning, companies unlock access to Flutter's robust ecosystem, enhancing their mobile app's longevity and prospects.Migrating from React Native to Flutter
Flutter dominates the cross-platform market, making it the default technology for building new mobile applications. This means that if you have an existing React Native application and find it hard to maintain, it suffers from bad reviews and is missing several updates. We can assist you with the move from React Native to Flutter. This starts with an audit that helps us understand how much we can reuse and what should be built from scratch.Migrating from MAUI to Flutter
The process of transitioning from MAUI to Flutter involves migrating the application’s architecture, adapting the user interface to Flutter’s widget system, rewriting platform-specific code using Flutter plugins, and ensuring the new codebase aligns with Dart while also managing any dependencies or libraries that need to be replaced or reconfigured.Using Flutter for Web
Flutter is truly a cross-platform solution. Its capabilities cover the smooth development process for mobile applications, web interfaces, and desktop apps. Flutter for Web is growing in popularity, and according to our recent Flutter CTO Survey, more than 60% of teams using Flutter take advantage of Flutter for Web.How much does it cost to develop a Flutter app?
Free out-of-the-box features for Flutter apps
In our apps, we implement a design system that integrates with the development environment, allowing the automatic transfer of global parameters for key components such as colors, fonts, behaviors, buttons, and forms.
Why choose LeanCode as your Flutter app development company?
Flutter has been our core technology since 2018
We’ve been developing mobile apps with Flutter since 2018 because we believe this cross-platform framework is the perfect solution for building future-proof mobile applications. Over the past few years, we’ve delivered medium- and large-scale Flutter apps to a wide range of clients, proving that Flutter is the backbone of our expertise. This extensive experience has allowed our mobile team to sharpen their exceptional skills in Flutter, which we bring to every project.We build Flutter enterprise apps
LeanCode is known for delivering enterprise Flutter applications. One of them is a mobile Flutter application for Credit Agricole Bank Polska, a Polish branch of Crédit Agricole Group. Its mobile banking application is dedicated to retail clients. You can read the Case Study of this app, written from a technical perspective. Our clients can benefit from our extensive experience.We are proud to be an official Flutter consultancy firm
LeanCode is recognized as one of the top global Flutter companies listed on the official Flutter.dev page. We’re thankful to Google’s FlutterDev team for this recognition, which motivates us to continue sharing our Flutter expertise and delivering top-tier applications for our clients.We have 2 Google Developer Experts for Flutter and Dart
Our experts are recognized by Google themselves. Mateusz and Albert are the official Google Developer Experts for Dart & Flutter—the only GDEs working in Poland. This is testament to their long-lasting impact on the community and the development of the Flutter framework as such.We have a team of 30+ Flutter Developers
A large-scale Flutter team opens up a broad spectrum of possibilities—from crafting smaller Flutter applications to developing enterprise-scale solutions involving a dozen Flutter developers or even more. Moreover, our team members have moved from general skills to specialized expertise in various areas, like Bluetooth technology, payment integrations (Stripe, Google Pay, Apple Pay), design systems, media services, and more.We create our own Flutter packages
At LeanCode, we are the authors of numerous open-source Flutter and Dart packages, which we actively maintain. These packages significantly simplify and streamline the development process for our clients' digital products by minimizing the need for additional code and reducing the risk of bugs.We develop a Flutter UI testing framework
LeanCode is developing Patrol—a Flutter-first UI testing framework that revolutionizes the testing of Flutter apps. Although we use it internally, it’s also an open-source project that gains new users each month. Patrol can drive your Flutter app in ways no other tool can, interacting with the operating system's UI, opening the notification shade, and toggling Wi-Fi and Location settings to enable real-world scenario testing. Patrol is designed specifically for automated testing of app UIs.We actively support the Flutter community
We organize the Flutter Warsaw event, the largest European meetup dedicated to Flutter, with nearly 2,000 members and 18 editions so far. Additionally, in 2020 we organized the Flutter Europe conference, which was the largest Flutter conference in the world until recently. We also sponsor all major Flutter-related events in Europe, such as Fluttercon Berlin, Flutter & Friends in Stockholm, and the Flutter Festival in Prague. Our developers are committed to sharing their knowledge by speaking at tech conferences across Europe, Tokyo, and New York.We teach good Flutter practices
We are in constant cooperation with the Warsaw University of Technology, where we teach Flutter theory and practice. We also take part in other educational events dedicated to future mobile app developers. We also run the LeanCode Internship, where students and graduates have the opportunity to work on an actual cross-platform app development project and learn Flutter best practices by working in a real project team.Things we cover during Flutter Development projects
What makes our Flutter development agency unique?
We are officially listed as a recommended Flutter Consultants, and you can find our case studies on Flutter.dev page.
We’ve gathered the bulletproof experience from large (200+ people) projects so we provide you with a service that is tested, and proven.
We build our own packages and solutions that we often share with the community. We believe in the value of knowledge sharing.
Our developers can help teach your team the skills necessary to continue your product development. We openly pass the know-how to our clients.
Explore our useful resources
Flutter CTO Report 2024
This report offers a comprehensive summary of insights and opinions on Flutter from CTOs, CIOs and Tech Leads, based on their experience with various Flutter projects.You may also like
Flutter for Enterprise
Based on the experience from large-scale projects with more than 20 Flutter Devs, we summarized best practices for building enterprise applications in Flutter.Building Mobile Banking Apps with Flutter
This ebook is packed with technical and organizational details about delivering the "CA24 Mobile" banking application with Flutter.Mobile Banking in Poland in 2022
This report presents conclusions regarding the state of mobile banking applications in Poland, customer needs, and technological challenges.Meet our top Flutter experts

Building one of the biggest Flutter applications in the world
Credit Agricole Bank Polska decided to become one of the leaders in digital banking. Their new application, CA24 Mobile, offers a unique customer experience and user interface on the Polish market. They used Flutter technology to gain a competitive advantage.




See our Flutter success stories


Credit Agricole Bank Polska


Activy


Welliba
Reviews of our work
LeanCode has delivered the MVP within 2.5 months, exceeding our expectations. Agile and detail-oriented, they've taken the time to understand the banking industry to deliver the most effective solution for our users. They are professional, efficient, and responsive.


If you decide to work with LeanCode, you will experience a lot more than a usual relationship between a client and a vendor. They have empathy combined with responsibility, and they are really lean - both for small and big clients.


Solid knowledge and trusting cooperation help us deliver new features to our customers quickly, continuously, and based on high-security standards. The sophisticated code base and experience within LeanCode provided us with a strong foundation for the IT security certification process. We are thrilled and grateful to have found LeanCode as a partner and look forward to our further cooperation.

