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:
Flutter Development Services: Our 30+ Flutter engineers and 2 Google Developer Experts (GDEs) build secure apps for mobile, web, and desktop.
Product Strategy & IT Consulting: Through Design Thinking Workshops and Mobile App Audits, we validate ideas, define roadmaps, and ensure every app meets user needs and business goals.
Mobile App Development: We use our custom Mobile App Template with reusable components to accelerate development, reduce costs, and shorten time-to-market.
Product Growth: We go beyond launch, offering ongoing support, maintenance, and feature development. We fix issues fast, ensure smooth operation, and train your internal teams to keep the product growing.
Why choose LeanCode:
Recognized Flutter experts: We're official Flutter consultants appointed by Google – trusted for our technical excellence and community leadership. Enterprise know-how: From banking and finance to healthcare, real estate, education, and retail, we deliver solutions that meet strict security and compliance standards.
Trusted by top brands: We've partnered with enterprises such as Millennium Bank, Credit Agricole Bank Polska, Virgin Money, Tide, Maspex, Sonova, Shell, Viessmann, NOS, and E. Wedel.
Responsible owners: We deliver by taking ownership of every project and responsibility for the outcome.
Leaders in the Flutter community: We're one of the most active voices in the Flutter community – organizing events, creating solutions like Patrol, contributing to open source, and sharing knowledge at conferences across Europe and beyond.
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.
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.
Mobile App Migration & Web App Dev for Tenant Platform
Featured Review
Mobile App DevelopmentWeb Development
Confidential
Jan. 2024 - Ongoing
5.0
Quality
5.0
Schedule
5.0
Cost
5.0
Willing to Refer
5.0
"I'm impressed with LeanCode's Flutter engineers."
Sep 11, 2024
CTO, Avy AB
Igor Kova
Verified
Consumer products & services
Stockholm, Sweden
11-50 Employees
Online Review
Verified
LeanCode has supported a tenant platform in the migration of their mobile app from React Native to Flutter. The team has also built a web app using Flutter and supported the client's team during the transition.
LeanCode's engagement with the client is ongoing, and the team has delivered the project's road map. The team provides several Flutter engineers with high seniority. LeanCode delivers work on time and communicates with the client clearly and transparently via email and virtual meetings.
The client submitted this review online.
BACKGROUND
Please describe your company and position.
I am the CTO of Avy AB
Describe what your company does in a single sentence.
Tenant Experience Platform
OPPORTUNITY / CHALLENGE
What specific goals or objectives did you hire LeanCode to accomplish?
Build Flutter App & Web
Support React team members transitioning to Flutter
SOLUTION
How did you find LeanCode?
Online Search
Other
Why did you select LeanCode over others?
High ratings
Close to my geographic location
Great culture fit
How many teammates from LeanCode were assigned to this project?
2-5 Employees
Describe the scope of work in detail. Please include a summary of key deliverables.
We partnered with LeanCode to assist in the migration of our mobile application from React Native to Flutter. During this process, we decided to extend the scope of the project to include a web application built in Flutter as well. LeanCode was hired to lead the development of this initiative and provide crucial support to our internal team during the transition.
Their team played a key role not only in executing the technical aspects of the migration and development but also in onboarding and upskilling our existing team members in Flutter, ensuring a smooth handover and effective collaboration.
The LeanCode team demonstrated their expertise in Flutter and their ability to integrate seamlessly with our team, adding value both in development and team empowerment.
RESULTS & FEEDBACK
What were the measurable outcomes from the project that demonstrate progress or success?
Project is ongoing. All deliverables in the roadmap so far are delivered on time.
Describe their project management. Did they deliver items on time? How did they respond to your needs?
LeanCode delivers items on time. There is a great communication where they communicate clearly and transparently.
What was your primary form of communication with LeanCode?
Virtual Meeting
Email or Messaging App
What did you find most impressive or unique about this company?
I'm impressed with LeanCode's Flutter engineers. High seniority among people with not that many years of experience on the paper.
Are there any areas for improvement or something LeanCode could have done differently?
Nothing I would change
RATINGS
5.0
Quality
5.0
Service & Deliverables
Schedule
5.0
On time / deadlines
Cost
5.0
Value / within estimates
Willing to Refer
5.0
NPS
Custom Software Dev for Banking Services Company
API DevelopmentCustom Software DevelopmentMobile 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.
LeanCode has helped the client deliver their MVP within months and evolve the platform to a production-grade solution. The team consistently delivers items on time and is quick to pivot whenever priorities shift. Moreover, their technical excellence and product knowledge have impressed the client.
The client submitted this review online.
BACKGROUND
Please describe your company and position.
I am the Engineering Manager of INFINIT
Describe what your company does in a single sentence.
Vertical banking services for SMEs, with AI-powered business tools.
OPPORTUNITY / CHALLENGE
What specific goals or objectives did you hire LeanCode to accomplish?
Build MVP
Active software development and maintenance
Product management
SOLUTION
How did you find LeanCode?
Referral
Why did you select LeanCode over others?
High ratings
Great culture fit
How many teammates from LeanCode were assigned to this project?
6-10 Employees
Describe the scope of work in detail. Please include a summary of key deliverables.
Their involvement began with the design and delivery of our initial MVP, where they provided end-to-end engineering capabilities that enabled us to validate the product vision quickly and effectively. As our business scaled, LeanCode became a long-term partner, contributing both to the development of core features and to the evolution of the platform’s architecture. Beyond pure engineering, LeanCode also took ownership of product management responsibilities in one of the most strategic and complex domains of our application. They guided the product definition, coordinated with stakeholders, and ensured timely delivery of features critical to our business operations. Key deliverables included: A robust MVP that laid the foundation for the platform Continuous delivery of new features and improvements across multiple modules Contributions to technical architecture decisions, ensuring scalability and maintainability What has truly set LeanCode apart is not only their technical expertise, but their exceptional ways of working. Their level of engagement, sense of ownership, and collaborative spirit consistently exceeded expectations and distinguished them from other contractors we have worked with. They seamlessly integrated with our internal teams, proactively raised and solved problems, and always demonstrated a strong commitment to the success of the product.
RESULTS & FEEDBACK
What were the measurable outcomes from the project that demonstrate progress or success?
The collaboration with LeanCode directly contributed to several measurable outcomes that demonstrate the success of the partnership:
Accelerated time-to-market: With LeanCode’s support, we were able to deliver our initial MVP within months, enabling us to validate the product vision early and start engaging customers sooner
Platform scalability: Over three years, the platform successfully evolved from MVP stage to a production-grade solution supporting thousands of users, reflecting the quality and robustness of their engineering work
Business-critical domain ownership: By managing a critical domain end-to-end, LeanCode enabled us to launch and operate one of the most complex and strategic parts of the business
Consistent delivery pace: Their teams maintained a steady output of new features and improvements, allowing us to meet key business milestones
Team effectiveness: Compared to other contractors we worked with, LeanCode’s level of engagement and proactive problem-solving reduced coordination overhead and improved overall delivery velocity
Describe their project management. Did they deliver items on time? How did they respond to your needs?
LeanCode’s project management has been exemplary throughout our collaboration. They consistently delivered items on time and demonstrated strong ownership of commitments, which gave us confidence in hitting critical milestones. What stood out was their ability to quickly adapt to shifting priorities and evolving requirements, always aligning their work with our business objectives.
They kept pragmatism at the heart of their approach, making the right calls when it mattered most: whether it was adjusting scope to ensure delivery, proposing a more efficient solution, or raising potential risks early. This pragmatic mindset, combined with transparent communication and a collaborative way of working, made them highly responsive to our needs and a reliable partner in the long run.
What was your primary form of communication with LeanCode?
Virtual Meeting
What did you find most impressive or unique about this company?
What impressed us most about LeanCode is their unique blend of technical excellence and product mindset. They are truly at the state of the art of modern software development practices, robust engineering standards, and efficient delivery methods. But what sets them apart is that they don’t stop at code: their developers consistently demonstrate a strong product sense, ensuring that every feature delivered creates tangible value for end users.
Equally remarkable is their ability to shape a standard within their teams, fostering developers who combine advanced technical abilities with a customer-oriented approach. This rare mix of skills made LeanCode not just a service provider, but a partner who elevated the way we build products.
Are there any areas for improvement or something LeanCode could have done differently?
N/A
RATINGS
5.0
Quality
5.0
Service & Deliverables
Schedule
5.0
On time / deadlines
Cost
5.0
Value / within estimates
Willing to Refer
5.0
NPS
Development Support & Mobile App Dev for Energy Solutions Co
Application TestingCustom Software DevelopmentMobile 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.
LeanCode has demonstrated exceptional proficiency in Flutter development. The team has successfully implemented Flutter architectural best practices, increasing the number of internal developers contributing to the Flutter codebase. LeanCode is proactive, committed, and an extension of the team.
The client submitted this review online.
BACKGROUND
Please describe your company and position.
I am the Head of R&D Wroclaw IoT&Frontends department of Viessmann R&D Center Wroclaw
Describe what your company does in a single sentence.
In January 2024, Viessmann Climate Solutions became part of Carrier Global Corporation. The combined expertise in the field of efficient energy and climate solutions, with a strong focus on quality and resource-efficient products, creates optimal conditions for a successful future.
As a part of Carrier, we will continue to develop technologies and solutions to meet the challenges of the 21st century.
OPPORTUNITY / CHALLENGE
What specific goals or objectives did you hire LeanCode to accomplish?
Expertise
Flexibility
Experience
SOLUTION
How did you find LeanCode?
Referral
Why did you select LeanCode over others?
High ratings
Referred to me
How many teammates from LeanCode were assigned to this project?
2-5 Employees
Describe the scope of work in detail. Please include a summary of key deliverables.
Our company embarked on a significant project to transition our existing Android and iOS applications to Flutter.
We have completely streamlined boiler commissioning and moved the process to a user-friendly mobile app.
In a couple of simple steps, ViGuide will safely guide users through the process of commissioning a Viessmann boiler.
Even you are new to the Viessmann boiler model, the simplified app allows you to carry out the steps with ease, as efficiently as possible and in less time.
The app will guide you step-by-step through the commissioning process and thus ensures that all necessary commissioning steps are carried out completely and in the correct order.
RESULTS & FEEDBACK
What were the measurable outcomes from the project that demonstrate progress or success?
Successful implementation of Flutter architectural best practices by internal team: This demonstrates that the team is not just writing Flutter code, but doing it in a scalable and maintainable way, thanks to Lean Code's guidance.
Increased number of internal developers actively contributing to the Flutter codebase: This shows that the team is successfully adopting and learning the new framework..
We've seen a significant increase in the number of our internal developers confidently contributing to the Flutter codebase since partnering with Lean Code.
Describe their project management. Did they deliver items on time? How did they respond to your needs?
Their technical knowledge was evident from the outset, and they consistently provided insightful solutions to the challenges we encountered. This was particularly crucial for our internal development team, which was primarily composed of developers transitioning from web and native mobile development to Flutter.
Lean Code's experience and guidance in this area were absolutely essential in navigating the intricacies of the framework and ensuring our team's growth. We particularly appreciated their proactive communication and their commitment to delivering high-quality results.
What was your primary form of communication with LeanCode?
In-Person Meeting
Virtual Meeting
Email or Messaging App
What did you find most impressive or unique about this company?
The blend of deep Flutter expertise with their ability to effectively support and upskill a client's existing team during a major technological transition.
This was a critical undertaking, and we needed a partner with deep expertise and a reliable approach. Lean Code not only demonstrated exceptional proficiency in Flutter development but also proved to be a highly dependable and trustworthy team throughout the entire process.
Importantly, as our project is still underway and not yet released, we continue to benefit from their support, and we are confident that with Lean Code by our side, this will be a successful story.
Lean Code truly feels like an extension of our own team, and we wouldn't hesitate to recommend them to any company looking for expert Flutter development support, especially those navigating a similar transition.
Are there any areas for improvement or something LeanCode could have done differently?
nothing
RATINGS
5.0
Quality
5.0
Service & Deliverables
Schedule
5.0
On time / deadlines
Cost
4.5
Value / within estimates
Willing to Refer
5.0
NPS
Mobile App Development for Telecommunications Company
Custom Software DevelopmentMobile 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.
LeanCode's efforts resulted in a high-quality app with consistent performance across Android, iOS, and web platforms. The team was highly available, professional, organized, and committed to meeting the client's needs. They communicated clearly and efficiently, ensuring a smooth collaboration.
The client submitted this review online.
BACKGROUND
Please describe your company and position.
I am the Head of Technology of NOS
Describe what your company does in a single sentence.
Leading Tech Portuguese company providing cutting-edge cloud, AI and telecommunications solutions, including fixed and mobile services, while also being the country's top film distributor and exhibitor, committed to innovation and sustainability.
OPPORTUNITY / CHALLENGE
What specific goals or objectives did you hire LeanCode to accomplish?
Trainning
Mobile App Development
Consultancy
SOLUTION
How did you find LeanCode?
Online Search
Why did you select LeanCode over others?
Great culture fit
Good value for cost
Flutter community presence
How many teammates from LeanCode were assigned to this project?
2-5 Employees
Describe the scope of work in detail. Please include a summary of key deliverables.
LeanCode was engaged as a partner to migrate natively developed applications to a cross-platform solution using Flutter. Their scope of work included training the existing team on Flutter best practices and large-scale project collaboration, providing technical consultancy to resolve challenges, conducting code reviews to ensure quality, and assisting with the integration of native components for Android, iOS, and web platforms. Key deliverables included upskilling the team, resolving technical issues, improving code quality, and ensuring seamless cross-platform functionality, resulting in a successful migration and a high-quality, unified application.
RESULTS & FEEDBACK
What were the measurable outcomes from the project that demonstrate progress or success?
The team’s enhanced skills in Flutter, combined with the seamless migration to a cross-platform solution, resulted in a high-quality application with consistent performance across Android, iOS, and web platforms. Improved code quality and streamlined collaboration further underscored the project’s progress, ensuring timely delivery and a robust, scalable product. These achievements reflect the project’s overall success and the effective transition to a modern, unified development approach.
Describe their project management. Did they deliver items on time? How did they respond to your needs?
Working with LeanCode has been an exceptional experience. Their project management is highly professional, with clear communication and well-organized processes ensuring smooth collaboration. They consistently delivered items on time and demonstrated a strong commitment to meeting our needs, promptly addressing any challenges or adjustments required. The team’s dedication and expertise have made the project run seamlessly, reflecting their high level of competence and reliability.
What was your primary form of communication with LeanCode?
In-Person Meeting
Virtual Meeting
Email or Messaging App
What did you find most impressive or unique about this company?
What stood out most about LeanCode was their commitment and availability. Communication was always clear and efficient, with no delays or misunderstandings. Beyond their technical expertise, they provided support on multiple levels, offering programming assistance and an out-of-the-box approach to solving our challenges. This dedication to go above and beyond made them a unique partner.
Are there any areas for improvement or something LeanCode could have done differently?
No. LeanCode consistently delivered work of the highest standard, and there are no notable areas for improvement. Their professionalism, expertise, and commitment ensured that every aspect of the project was handled exceptionally well.
RATINGS
5.0
Quality
5.0
Service & Deliverables
Schedule
5.0
On time / deadlines
Cost
5.0
Value / within estimates
Willing to Refer
5.0
NPS
Mobil App Dev & UI/UX Design for Online Casting Agency
"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.
LeanCode has launched the app's MVP version, which received positive feedback for its user-friendly profile creation process. Their team manages the project well, proactively addressing issues and optimizing solutions. They also demonstrate excellent design, analytical, and communication skills.
The client submitted this review online.
BACKGROUND
Please describe your company and position.
I am the Executive Director of MMG ART PRODUCTION LLC ( MMG Talent )
Describe what your company does in a single sentence.
MMG Talent is the premier online casting agency/interactive talent database of models, actors, hostesses, influencers and performers - the one stop revolutionary interface connecting talent and clients.
OPPORTUNITY / CHALLENGE
What specific goals or objectives did you hire LeanCode to accomplish?
We partnered with Leancode to develop a sophisticated mobile app that seamlessly integrates with our online platform. The aim is to provide our users with a primary tool that simplifies profile creation, job applications, and management of the application process, enhancing efficiency and transparency throughout their journey.
SOLUTION
How did you find LeanCode?
Referral
Why did you select LeanCode over others?
High ratings
Great culture fit
Referred to me
Company values aligned
How many teammates from LeanCode were assigned to this project?
6-10 Employees
Describe the scope of work in detail. Please include a summary of key deliverables.
Our objective was to create a dual-platform mobile app using Flutter. Leancode, known for their expertise in Flutter, came highly recommended. We were impressed by their reviews and skill level.
The project began with a UX Design Sprint, which led to our decision to engage Leancode for the full development based on their strong communication and design acumen. After successful beta launch to demo testers, we released to stores the MVP version of the app, and are now developing the full version with all planned functionalities.
RESULTS & FEEDBACK
What were the measurable outcomes from the project that demonstrate progress or success?
The MVP app launch has garnered very positive feedback, particularly for its user-friendly profile creation process.
Describe their project management. Did they deliver items on time? How did they respond to your needs?
Leancode's project management was structured around bi-weekly sprints, which allowed for meticulous planning and regular refinement sessions to finalize features and tasks. While we established milestones well in advance, we encountered some unexpected bugs that necessitated slight adjustments to our final delivery dates. Despite these challenges, the team was proactive in addressing the issues and optimizing solutions in subsequent sprints.
Throughout the project, we utilized a suite of communication tools, including Slack, Email, Jira, and Figma, complemented by consistent online meetings via Google Meet. This suite of tools facilitated clear and effective communication, which was key to our project's progression.
We were particularly impressed with the professionalism and communication prowess of the Product Owner. The UX designer demonstrated outstanding design and analytical abilities, while the QA team's dedication ensured quality control. Furthermore, the developers' expertise in Flutter was evident and greatly appreciated. Their collective responsiveness to our needs has been commendable, and we are quite pleased with the partnership's results thus far.
What was your primary form of communication with LeanCode?
Virtual Meeting
Email or Messaging App
What did you find most impressive or unique about this company?
LeanCode’s dedication, communication, and Flutter expertise have been most impressive, showcasing a commitment to both product improvement and partnership enhancement.
Are there any areas for improvement or something LeanCode could have done differently?
not really
RATINGS
5.0
Quality
5.0
Service & Deliverables
Schedule
4.5
On time / deadlines
Cost
5.0
Value / within estimates
Willing to Refer
5.0
NPS
Mobile App, Mktg Automation & Web Dev for Audiobook Company
Custom Software DevelopmentMobile App DevelopmentProduct DesignWeb 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.
Thanks to LeanCode, the client now has mobile app test versions. The team manages the engagement efficiently and facilitates weekly meetings. They use Jira and the Agile methodology effectively. As a result, they always meet deadlines and deliver according to requirements.
The client submitted this review online.
BACKGROUND
Please describe your company and position.
I am the CMO of The Audio Bible.
Describe what your company does in a single sentence.
The Audio Bible is an audiobook in the form of a radio play launched in February 2015 - lasting about 110 hours, being an audio adaptation of the most popular book in the world - the Holy Bible.
OPPORTUNITY / CHALLENGE
What specific goals or objectives did you hire LeanCode to accomplish?
Mobile App Development
IT&CX Consulting
Marketing automation
Web Development
SOLUTION
How did you find LeanCode?
Referral
Why did you select LeanCode over others?
Great culture fit
Referred to me
Company values aligned
How many teammates from LeanCode were assigned to this project?
6-10 Employees
Describe the scope of work in detail. Please include a summary of key deliverables.
Subscriptions: Regardless of payment source, users can access their accounts on different devices (with different operating systems). Pricing can be managed without app releases, allowing for differentiation prices among users/user groups. Prices for given users may be changed manually or by providing promotion codes to users.
Virtual bookmarks: In this case, we used Firestore to enable the storage of information. Users can mark their favorite chapters or see the last played part of the audiobook. The virtual bookmark will remember when a given chapter was paused in the listening session, and the user can continue from that moment the next time it is played back.
Multi-language content: The user can choose which language version they prefer (Polish, English, Spanish). The challenge was that from the backend server side, the content was structured uniformly regardless of the language version but depending on the user’s language preferences, we had to present the content differently.
RESULTS & FEEDBACK
What were the measurable outcomes from the project that demonstrate progress or success?
Mobile app test versions
Describe their project management. Did they deliver items on time? How did they respond to your needs?
Weekly meetings
JIRA management
AGILE project management
What was your primary form of communication with LeanCode?
Virtual Meeting
What did you find most impressive or unique about this company?
They keep their deadlines and their word.
Are there any areas for improvement or something LeanCode could have done differently?
faster resolution of minor technical errors
RATINGS
5.0
Quality
5.0
Service & Deliverables
Schedule
5.0
On time / deadlines
Cost
4.5
Value / within estimates
Willing to Refer
5.0
NPS
Mobile App, Web Dev & UI/UX Design for Financial Services Co
Application TestingCustom Software DevelopmentMobile App DevelopmentProduct DesignUX/UI DesignWeb 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.
LeanCode has skillfully delivered the project as per the client's requirements. The service provider ensures effective and productive communication through meetings, interviews, and email. Their commitment, project management, availability, and supportive approach are key elements of their work.
The client submitted this review online.
BACKGROUND
Please describe your company and position.
I am the Product Owner of Finelf.com (Kontomierz.pl)
Describe what your company does in a single sentence.
Finelf.com is a company specialized in making financial decisions easier. Our portfolio consists mostly of affiliate pages for products and services from financial field in Poland and other countries.
OPPORTUNITY / CHALLENGE
What specific goals or objectives did you hire LeanCode to accomplish?
Development of the new version of Kontomierz.pl
Development of new features
New app design
Mobile app
SOLUTION
How did you find LeanCode?
Referral
Why did you select LeanCode over others?
High ratings
Pricing fits our budget
Great culture fit
Good value for cost
How many teammates from LeanCode were assigned to this project?
6-10 Employees
Describe the scope of work in detail. Please include a summary of key deliverables.
1. Designing a new look&feel and improving the User Experience of the application.
2. Recreating some of the features from the previous app version.
3. Migrating data from the old version of the app.
4. Implementing subscription payment options.
5. Developing new features.
RESULTS & FEEDBACK
What were the measurable outcomes from the project that demonstrate progress or success?
Creating a demo application and a new Kontomierz.co.uk website. Then systematically releasing more versions of the application along with monetization. Working on new features and implementing them.
Describe their project management. Did they deliver items on time? How did they respond to your needs?
Working with LeanCode is at a very high level! Interviews and meetings go smoothly, the team is committed to the work and the project. The project is very well managed.
What was your primary form of communication with LeanCode?
In-Person Meeting
Virtual Meeting
Email or Messaging App
What did you find most impressive or unique about this company?
Commitment and availability. No communication problems. Assistance on many levels, not only programming assistance, but also business assistance.
Are there any areas for improvement or something LeanCode could have done differently?
No. Everything is of a high standard!
RATINGS
5.0
Quality
5.0
Service & Deliverables
Schedule
5.0
On time / deadlines
Cost
5.0
Value / within estimates
Willing to Refer
5.0
NPS
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.
LeanCode successfully built the platform, enabling the client to focus on business and gain prominent clients among tournament organizers. The team's project management was effective using the Scrum methodology. Moreover, they were dependable, and their bold advice exceeded expectations.
The client submitted this review online.
BACKGROUND
Please describe your company and your position there.
I'm a funder of Virium - a SporTech platform and complete system for league and tournament organizers.
OPPORTUNITY / CHALLENGE
For what projects/services did your company hire LeanCode, and what were your goals?
We hired LeanCode to create the entire platform from scratch. They provided us with all the technical knowledge we needed, including integration research and IT solution consulting. We were able to translate our business goals into technical architecture. We entrusted LeanCode with full responsibility for organizing the developers' work and managing work stages, which we were fully satisfied with.
SOLUTION
How did you select this vendor and what were the deciding factors?
We’ve had the pleasure of working with LeanCode in previous projects and knew their technical skills. We knew they had extensive knowledge not only of product development but also of available technology solutions.
Describe the scope of work in detail, including the project steps, key deliverables, and technologies used.
We created two Flutter mobile applications - one for the Players and one for Referees on both iOS and Android platforms. We also made two web applications: one for the manager to create and manage Leagues and Tournaments and the other one for Players and Fans to watch competitions.
The web app for the manager was based on design components, and the Players facing application was fully custom-made. Both web applications were made using React. All the backend work was done in the .Net Core. We started the work by creating the Manager application for organizers, a web application for players and fans, and the Referee app. This was the scope of MVP, and it was the solution we sold in the first commercial deployment.
How many people from the vendor's team worked with you, and what were their positions?
We worked with 2 backend developers, 2 frontend developers, 2 mobile developers, and 2 testers.
RESULTS & FEEDBACK
Can you share any measurable outcomes of the project or general feedback about the deliverables?
All the development plans succeeded. We were able to create the entire platform. We managed to build a system for white-label customer deployment from one code base. This was something that LeanCode tech specialists pointed out and made possible.
From the business perspective, we were able to focus on a new client segment - big clients that need their branding on mobile applications. The biggest amateur leagues and tournament organizers in Poland use the system. Any obstacles to the growth of our solution are non-tech related.
Describe their project management style, including communication tools and timeliness.
We worked in Scrum methodology and were able to create MPV within 3 months. It allowed us to deploy Virium to our first customer for commercial use. We used Google Meet for organizing meetings and Slack for everyday communication. We worked in 2-week scrum sprints. We were able to show the first fruits of our labor after 2 months.
What did you find most impressive or unique about this company?
Thanks to cooperation with LeanCode, we could entirely focus on solving our business issues without any fear of the proper implementation of the technical aspects of the project. We could also trust them to solve any technical problems when any arose.
In addition, during the product design workshops with technology experts from LeanCode, we learned that we could implement some parts of the Virium system with solutions that exceeded our expectations and all within the assumed budget. LeanCode's bold advice allowed us to conclude that we don't need some of the functionalities, but from the other side, the key functions were implemented in a way that delighted our clients.
Are there any areas for improvement or something they could have done differently?
I see some changes we would make, but they would be business decisions. If we would, for some reason, had to rebuild the system from scratch, we would use the same technologies and technical concepts.
RATINGS
5.0
Quality
5.0
Service & Deliverables
Schedule
5.0
On time / deadlines
Cost
5.0
Value / within estimates
Willing to Refer
5.0
NPS
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.
LeanCode consistently develops and delivers new features and improvements, meeting the client's expectations with their high-quality work. The team is open and constructive in their communication and organized in their project management. Their high technical expertise and enthusiasm stand out.
The client submitted this review online.
BACKGROUND
Please describe your company and your position there.
I'm the CTO of welliba. Welliba’s EX+ platform enables organisations to measure, predict and manage employee experience. At the same time, it provides on-demand, personalised insights and advice to employees.
OPPORTUNITY / CHALLENGE
For what projects/services did your company hire LeanCode, and what were your goals?
We needed support in developing a new service consisting of a web application and an app. We wanted to develop a market-ready product with a small, flexible team in the shortest possible time. The development was to be done in collaboration with our development team.
SOLUTION
How did you select this vendor and what were the deciding factors?
We became aware of the provider through several technical articles. The professional presentation and large overlap of the Tech-Stack convinced us.
Describe the scope of work in detail, including the project steps, key deliverables, and technologies used.
The product is made up of several components. The most important is a web application developed with React and Tailwind CSS. In addition, there is a native app developed with Flutter. The app is used for continuous user interaction and visual presentation of the results. All systems are multilingual and support RTL languages. The CQRS backend is written in C# and uses PostgreSQL as a database. The entire system runs on MS Azure in a Kubernetes cluster. The infrastructure is set up and maintained via Terraform.
Communication with the user is done via a flexible notification system that includes email, push notification, in-app notification, Slack and Teams.
How many people from the vendor's team worked with you, and what were their positions?
A total of 6 people are involved in the project. 1 frontend developer, 2 backend developers, 1 flutter developer, 1 QA specialist, and a scrum master. They work together with the developers from Welliba.
RESULTS & FEEDBACK
Can you share any measurable outcomes of the project or general feedback about the deliverables?
After a few months, we were able to set up the first projects on the new platform. Currently, new features and improvements are being developed and are being delivered as scheduled.
Describe their project management style, including communication tools and timeliness.
We have very open and constructive communication. Daily stand-ups and weekly retros help us to optimize the processes. We use Slack and GitHub for communication.
What did you find most impressive or unique about this company?
We're impressed with their very high technical expertise and engagement.
Are there any areas for improvement or something they could have done differently?
No.
RATINGS
5.0
Quality
5.0
Service & Deliverables
"Very good technical expertise and always up to date"
Schedule
5.0
On time / deadlines
"Always very reliable"
Cost
5.0
Value / within estimates
"Very competitive prices."
Willing to Refer
5.0
NPS
"Have already recommended Leancode to business partners.
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.
By engaging with LeanCode, the company successfully built the MVP from scratch and delivered the product ahead of schedule. They used Slack, email, Jira, Figma, and Miro to facilitate an effective workflow. LeanCode's transparency and excellent communication stood out.
The client submitted this review online.
BACKGROUND
Please describe your company and your position there.
I'm the Product Owner in company that develops digital products and ventures
OPPORTUNITY / CHALLENGE
For what projects/services did your company hire LeanCode, and what were your goals?
Our goal was to develop a web platform in the FinTech area that optimizes the discounting and billing process. It brings value to each party engaged in the transaction. Suppliers can get paid before the due date. Buyers can get a decent return on invested cash.
SOLUTION
How did you select this vendor and what were the deciding factors?
Leancode has demonstrated very good communication. They analyzed the project thoroughly and did an efficient cost estimation addressing each of the project elements
Describe the scope of work in detail, including the project steps, key deliverables, and technologies used.
Project was run using Scrum framework and it works well. We started with kickoff with entire team and stakeholders. Essential task was to build an MVP of the fintech platform with key features such as creating offer templates and accepting offers.
Technologies:
React
Node.js
GraphQL
How many people from the vendor's team worked with you, and what were their positions?
Team Leader (Full stack developer)
Regular Developer (Frontend)
Junior Developer (Frontend)
Scrum Master
UX/UI Designer Analyst
RESULTS & FEEDBACK
Can you share any measurable outcomes of the project or general feedback about the deliverables?
We made the whole MVP from scratch, modeling the entire process and carefully selecting essential features at every stage of development. Thanks to the careful feature-choosing process during refinements, we delivered the product faster, within only 4 months. The above-mentioned things allowed rapid implementation with the first customers and satisfy the stakeholders.
Describe their project management style, including communication tools and timeliness.
We had daily stand-ups with entire team and also refinements once a week.
Tools:
Slack
email
Jira
Figma
Miro
What did you find most impressive or unique about this company?
The project was run transparently with good communication and pace of work
Are there any areas for improvement or something they could have done differently?
No, everything in the project was implemented appropriately.
RATINGS
5.0
Quality
5.0
Service & Deliverables
Schedule
4.5
On time / deadlines
Cost
5.0
Value / within estimates
Willing to Refer
5.0
NPS
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.
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