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Enterprise Flutter App Development Company

LeanCode is a full-cycle software development company designated as an official Flutter consultant by Google. With a team of 80+ tech experts, we build software solutions that drive change and help businesses scale.

As your tech partner, we cover the entire software development lifecycle – from product strategy and design to development, launch, and maintenance. Our offering includes:

  • Min project size
    $25,000+
  • Hourly rate
    $50 - $99 / hr
  • Employees
    50 - 249
  • Locations
    Warszawa, Poland
  • Year founded
    Founded 2016
  • Languages
  • Timezones

2 Languages that we service

  • English
  • Polish

15 Timezones that we service

HST
Hawaii Standard Time (HST)
AKST
Alaska Standard Time (AKST)
PST
Pacific Standard Time (PST)
MST
Mountain Standard Time (MST)
CST
Central Standard Time (CST)
EST
Eastern Standard Time (EST)
AST
Arabia Standard Time (AST)
ACT
Australia Central Time (ACT)
AET
Australia Eastern Time (AET)
CET
Central European Time (CET)
EET
Eastern European Time (EET)
GMT
Greenwich Mean Time (GMT)
MET
Middle East Time (MET)
NST
New Zealand Standard Time (NST)
SGT
Singapore Standard Time (SGT)

1 Locations

  • Warszawa , Poland

No have been added yet...

    Pricing Snapshot

    Min. project size $25,000+
    Avg. hourly rate $50 - $99 /hr
    Rating for cost 4.9 /5

    What Clients Have Said

    LeanCode offers competitive pricing with good value for cost, as noted by several clients. Specific project costs mentioned include a $350,000 investment for a mobile application and a $25,000 budget for a barn management app. Clients praised timely delivery and effective project management.

    This summary is based on verified Clutch reviews.

    Most Common Project Size

    $50,000 - $199,999 based on 17 reviews
    < $49,999 $50,000 - $199,999 $200,000 - $999,999 > $1,000,000

    Select a service to see pricing information

    LeanCode Review Insights

    Overall Review Rating

    5.0
    • Quality 5.0
    • Schedule 4.9
    • Cost 4.9
    • Willing to Refer 5.0

    Top Mentions

    Review Highlights

    • Proficient in Flutter Development

      LeanCode is recognized for their expertise in Flutter development, frequently praised for implementing best practices and delivering high-quality applications across multiple projects. This proficiency has been crucial in successful project outcomes, like app migrations and new feature implementations.

    • Proactive Problem Solving

      LeanCode is recognized for their ability to anticipate potential issues and propose proactive solutions. Their pragmatic approach to adjusting project scopes and addressing risks early is appreciated by clients.

    • High Client Engagement

      Clients appreciate LeanCode's commitment and involvement in projects. They are often described as proactive problem-solvers who integrate seamlessly with internal teams. Their dedication to client success is a recurring theme in feedback.

    • Supportive and Collaborative Team

      LeanCode fosters a collaborative environment, working closely with clients to ensure alignment and shared vision. Their supportive nature and willingness to assist with both technical and business challenges enhance the overall collaboration experience.

    • Strong Project Management

      LeanCode consistently demonstrates effective project management across various engagements. Clients highlight their ability to deliver projects on time, maintain clear communication, and adapt to changing project scopes. Their agile approach ensures a smooth workflow and timely delivery.

    • Minor Timeline Adjustments

      Some clients noted minor delays due to unexpected issues during development. However, LeanCode's prompt response and proactive adjustments ensured project goals were still met effectively.

    LeanCode Reviews

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    Services
    Project cost

    Custom Software Dev for Banking Services Company

    • API Development Custom Software Development Mobile App Development
    • Confidential
    • Apr. 2022 - Ongoing
    5.0
    Quality
    5.0
    Schedule
    5.0
    Cost
    5.0
    Willing to Refer
    5.0

    "Their developers consistently demonstrate a strong product sense."

    Sep 30, 2025
    Engineering Manager, INFINIT
    Guillaume Lavignotte
    Verified
    • Financial services
    • Paris, France
    • 51-200 Employees
    • Online Review
    • Verified

    LeanCode provides custom software development services for a banking services company. The team has built the client's MVP and is responsible for developing new features and maintaining the software.

    Development Support & Mobile App Dev for Energy Solutions Co

    • Application Testing Custom Software Development Mobile App Development
    • Confidential
    • June 2024 - Apr. 2025
    5.0
    Quality
    5.0
    Schedule
    5.0
    Cost
    4.5
    Willing to Refer
    5.0

    "They consistently provided insightful solutions to the challenges we encountered."

    Mar 24, 2025
    Head of IoT Department, Viessmann R&D Center Wroclaw
    Przemyslaw Grabarczyk
    Verified
    • HVAC
    • Wroclaw, Poland
    • 10,001+ Employees
    • Online Review
    • Verified

    LeanCode provides development support and mobile app development for an energy solutions company. The team has helped the client transition their existing Android and iOS applications to the Flutter framework.

    Mobile App Development for Telecommunications Company

    • Custom Software Development Mobile App Development
    • Confidential
    • Jan. - Mar. 2025
    5.0
    Quality
    5.0
    Schedule
    5.0
    Cost
    5.0
    Willing to Refer
    5.0

    "Beyond their technical expertise, they provided support on multiple levels."

    Mar 18, 2025
    Head of Technology, NOS
    Fernando Oliveira
    Verified
    • Telecommunications
    • Portugal
    • 1,001-5,000 Employees
    • Online Review
    • Verified

    LeanCode provided mobile app development, training, and consulting for a telecommunications company. The team migrated natively developed apps to a cross-platform solution using Flutter and offered training.

    Mobil App Dev & UI/UX Design for Online Casting Agency

    • Application Testing Mobile App Development UX/UI Design
    • Confidential
    • Oct. 2023 - Ongoing
    5.0
    Quality
    5.0
    Schedule
    4.5
    Cost
    5.0
    Willing to Refer
    5.0

    "LeanCode’s dedication, communication, and Flutter expertise have been most impressive."

    Apr 29, 2024
    Executive Director, MMG ART PRODUCTION LLC ( MMG Talent )
    Kasia Golda
    Verified
    • Other industries
    • Dubai, United Arab Emirates
    • 11-50 Employees
    • Online Review
    • Verified

    LeanCode has built an MVP version of an online casting agency's app using Flutter. They've designed the app's UX and launched the beta version to demo testers. The team is now working on the app's full version.

    Mobile App, Mktg Automation & Web Dev for Audiobook Company

    • Custom Software Development Mobile App Development Product Design Web Development
    • Confidential
    • Jan. 2022 - Ongoing
    5.0
    Quality
    5.0
    Schedule
    5.0
    Cost
    4.5
    Willing to Refer
    5.0

    "They keep their deadlines and their word."

    Sep 20, 2023
    CMO, The Audio Bible
    Bartłomiej Majchrzak
    Verified
    • Arts, entertainment & music
    • Poland
    • 11-50 Employees
    • Online Review
    • Verified

    LeanCode has built the mobile app of an audiobook firm. The team has worked on features such as subscriptions, virtual bookmarks, and multi-language content. They've also done marketing and development tasks. 

    Mobile App, Web Dev & UI/UX Design for Financial Services Co

    • Application Testing Custom Software Development Mobile App Development Product Design UX/UI Design Web Development
    • $50,000 to $199,999
    • June 2022 - Ongoing
    5.0
    Quality
    5.0
    Schedule
    5.0
    Cost
    5.0
    Willing to Refer
    5.0

    "Everything is of a high standard!"

    May 15, 2023
    Product Owner, Finelf.com (Kontomierz.pl)
    Marzena Wójcik
    Verified
    • Financial services
    • Gdansk, Poland
    • 11-50 Employees
    • Online Review
    • Verified

    LeanCode has developed a demo app and a website for a financial services company. They've migrated data from the old to the new app version, improved the UX, and developed new features, such as payment options.

    Mobile & Web Development for Sports Technology Platform

    • $50,000 to $199,999
    • Jan. 2021 - Jan. 2022
    5.0
    Quality
    5.0
    Schedule
    5.0
    Cost
    5.0
    Willing to Refer
    5.0

    "They had extensive knowledge not only of product development but also of available technology solutions."

    Feb 28, 2023
    CEO, Virium Sp. z o. o.
    Dawid Witkowski
    Verified
    • Other industries
    • Olsztyn, Poland
    • 1-10 Employees
    • Online Review
    • Verified

    LeanCode provided mobile and web development for a sports technology platform. They built two mobile apps using Flutter and two web apps using React. The team also built the platform's backend using .NET Core. 

    Web & Mobile App Development for HR SaaS Platform

    • $200,000 to $999,999
    • December 2021
    5.0
    Quality
    5.0
    Schedule
    5.0
    Cost
    5.0
    Willing to Refer
    5.0

    "We're impressed with their very high technical expertise and engagement."

    Feb 16, 2023
    CTO, Welliba
    Mario Martella
    Verified
    • Other industries
    • Ireland
    • 11-50 Employees
    • Online Review
    • Verified

    LeanCode built a web app and a mobile app for an HR SaaS platform. The web app was developed with React and Tailwind CSS, and the native app was developed with Flutter.

    Platform Dev for Digital Venture Company

    • Web Development
    • $50,000 to $199,999
    • Apr. - Aug. 2022
    5.0
    Quality
    5.0
    Schedule
    4.5
    Cost
    5.0
    Willing to Refer
    5.0

    "Everything in the project was implemented appropriately."

    Jan 20, 2023
    Product Owner, The Heart
    Anonymous
    Verified
    • Other industries
    • Warsaw, Poland
    • 11-50 Employees
    • Online Review
    • Verified

    LeanCode developed a FinTech web platform for a digital venture company. They integrated features for creating and accepting offers and used React, Node.js, and GraphQL as key technologies.

    Showing 1-10 of 31 Reviews

    Our Story

    We began as a small group of six dedicated professionals. Today, we've grown to a team of over 80 tech experts, all focused on building software solutions that drive change and help businesses scale.

    What sets us apart? Our deep technical expertise is combined with a strong business mindset. Flutter, Google’s leading cross-platform development framework, lies at the core of our work, enabling us to deliver complex projects faster, shorten time-to-market, and ensure top-tier performance.

    What Sets Us Apart

    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.

    True problem solvers

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

    Enterprise-level consultants

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

    Clutch verification provides an additional layer of data to help you make the right purchasing decision of business services.

    Learn More
    Verified Client Reviews
    27
    Overall Review Rating
    5
    Source
    Clutch
    Last Updated
    September 30, 2025

    Business Entity

    Business Entity Name LeanCode Sp. z o.o.
    Source Central Statistical Office of Poland
    Jurisdiction of Formation Poland
    Date of Formation September 22, 2016
    Status Active
    Last Updated October 12, 2023
    ID 0000638275

    Credit Report Results

    International Credit Risk Assessment Very Low Risk
    Source Creditsafe
    Last Updated January 1, 2022
    Learn More About The Clutch Verification Process

    Locations (1)

    ul. Wróbla 8A WarszawaPoland 02-736

    50 - 75

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    Grupa Maspex

    (1)
    Grupa Maspex Logotype

    Marta Gawlik

    INFINIT

    (1)
    INFINIT Logotype

    Guillaume Lavignotte

    Additional Connections

    (3)

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