Migration to Flutter Guide
Discover our battle-tested 21-step framework for a smooth and successful migration to Flutter!

Top Flutter development company for enterprise and scale-ups

Deloitte Technology Fast 50 award
Clutch 100 Fastest Growth award
Top Flutter Developers 2025 (Clutch)
Forbes Diamond 2024 award
Gazele Biznesu 2023 award
LeanCode Design Thinking Workshops
Flutter logo
React logo
.Net logo
Credit Agricole logo
Google logo
Millennium logo
Shell logo
Sennheiser logo
Enterprise Switzerland logo
Virgin Money logo
NOS logo

We cover the entire product journey

Why companies choose LeanCode

1
World-class Flutter experts

Poland is home to some of the world’s best engineers, and our Flutter team represents the very best of them.

2
True problem solvers

We go beyond code to understand and solve real business challenges, helping the product move forward and scale effectively.

3
Enterprise-level consultants

We bring vast experience managing complex IT systems for large enterprises, ensuring they meet rigorous standards of reliability, scalability, and security.

80+
experts on board
40+
dedicated Flutter devs
100+
digital products delivered
5.0
rating on Clutch

Tangible results delivered for our clients

Credit Agricole Bank Polska logo
Project screenshot

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 customer experience and user interface which are unique on the Polish market. They used Flutter technology to gain a competitive advantage.

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 customer experience and user interface which are unique on the Polish market. They used Flutter technology to gain a competitive advantage.
200+
Members worked for a year on the project
200+
Members worked for a year on the project
30
Flutter Developers working to build a next-generation mobile banking app
30
Flutter Developers working to build a next-generation mobile banking app
12
months to deliver a modern mobile app
12
months to deliver a modern mobile app
Project screenshot

Client feedback that says it all

Google logo

They delivered the items on time, and they were great to collaborate with. They are truly experts in the Flutter and Dart space. It was a great experience overall.

Abdallah Shaban from Google
Abdallah ShabanOutbound Product ManagerGoogle
5.0
Reviewed onClutch
Google logo

They delivered the items on time, and they were great to collaborate with. They are truly experts in the Flutter and Dart space. It was a great experience overall.

Abdallah Shaban from Google
Abdallah ShabanOutbound Product ManagerGoogle
5.0
Reviewed onClutch
Credit Agricole logo

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.

Tomasz Czerwiński
Tomasz CzerwińskiDeputy CIOCredit Agricole Bank Polska
5.0
Reviewed onClutch
Credit Agricole logo

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.

Tomasz Czerwiński
Tomasz CzerwińskiDeputy CIOCredit Agricole Bank Polska
5.0
Reviewed onClutch
NOS logo

Working with LeanCode has been an exceptional experience. Their project management is highly professional, with clear communication and well-organized processes ensuring smooth collaboration.

Fernando Oliveira
Fernando OliveiraHead of TechnologyNOS
5.0
Reviewed onClutch
NOS logo

Working with LeanCode has been an exceptional experience. Their project management is highly professional, with clear communication and well-organized processes ensuring smooth collaboration.

Fernando Oliveira
Fernando OliveiraHead of TechnologyNOS
5.0
Reviewed onClutch

Explore our expert insights to build better software

Migration to Flutter ebook mockup

Migration to Flutter

Migration to Flutter ebook mockup

Migration to Flutter

A 21-step roadmap covering the entire Flutter migration process, from initial assessment to project rollout, with proven migration strategies and success stories from global enterprises.
Flutter CTO Report 2024

Flutter CTO Report 2024

Flutter CTO Report 2024

Flutter CTO Report 2024

A comprehensive summary of insights and opinions on Flutter from CTOs, CIOs and Tech Leads, based on their experience with various Flutter projects.
Ebook Enterprise

Flutter for Enterprise

Ebook Enterprise

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.
Meet our expert

Let’s talk about your big vision!

Łukasz Kosman / CEO at LeanCode
Łukasz Kosman, CEO LeanCode
Hi,

let's work together! During the initial scoping call with one of our LeanCode experts, we find out what you want to build. For you, it means early insight into feasibility and ballpark estimates.

Łukasz KosmanCEO at LeanCode