- Developer
- Business role
- CTO/IT Director
- CEO/Founder
- Product Owner
- Other
Custom mobile app development company
Your trusted partner in full-cycle mobile development
Mobile development services that deliver business results
Custom mobile app solutions
If you're looking to build a new mobile app for your business, we’ll guide you through every step of the process. From product ideation and UI/UX design to mobile app development, quality assurance, and support plans with an SLA, we ensure that every aspect of your app is delivered to the highest standards.Cross-platform app development
By choosing a cross-platform solution, you save time and reduce development costs, while expanding your reach to a broader audience with a single app solution. As experts in Flutter, the leading cross-platform technology, we build scalable, large-scale apps that deliver a seamless user experience across multiple mobile platforms.Legacy app modernization
Does your app suffer from technical debt, causing poor performance and negative reviews? To address these challenges, we begin by conducting a detailed app audit to identify areas for improvement. This sets the stage for a strategic transformation into a modern, high-performing app that meets today’s user expectations and restores your competitive edge.What is included in custom Mobile App Development?
Why build your next mobile app with LeanCode?
With proven experience from large-scale projects (200+ people), we offer a service that is both tested and reliable, ensuring your app is built to the highest standards.
We don’t reinvent the wheel. Instead, we leverage proven components and solutions to accelerate development and bring your app to market faster.
Our managers continuously monitor projects to ensure they are delivered on time and within budget, providing a predictable and reliable project experience.
While many agencies simply provide mobile app developers, we take full ownership of projects, ensuring every detail is handled with care and precision.
Our proven mobile app development process

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.




Explore our delivered mobile solutions
Client feedback that says it all
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.


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.


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.

