Mobile-first. A new mobile application for the leader of the construction industry in Poland.

  • Client
    • LeroyMerlin
  • Scope of work
    • Re-design of the entire mobile channel
    • Mobile apps both for Android and iOS
  • Technologies
    • React
    • React Native
    • RestAPI


Leroy Merlin has been in the construction market since 1923 and the brand has already made its mark on four continents, operating in the Polish market since 1994. The company’s mission is to help customers realize the homes and gardens of their dreams. To this end, the online store – – offers over 63,000 home and garden products. Together with the client, Unity Group introduced Leroy Merlin’s first mobile applications to the Polish market. As a result, the latter has refined their strategy towards a mobile-first approach that’s in line with global trends.

Project goal

The organization decided to completely re-design its entire mobile channel, with an emphasis on high-quality user experience and modernizing it in accordance with the latest Google trends and guidelines. The main goal of the project was to increase the number of access channels to the client, with an emphasis on mobile users. The priority was to enable browsing across a rich database of 70 thousand products and place orders anytime, directly from the smartphone screen.


The implemented project is based on React / React Native technology. The result of the work is a triple hybrid, which has significantly reduced labor costs and accelerated the publication of applications on the internet by 50%.

React Native allows the programmer to create fully functional mobile applications, using one codebase for two systems at once – iOS and Android.

The framework enables the use of hardware resources of mobile devices, allowing access to the user’s location, smartphone memory, camera and other functions offered by mobile operating systems.

Furthermore, the applications delivered for Leroy Merlin technologically separate the presentation layer from business logic. Communication with the backend and business logic of the system is carried out through REST API. Mobile solutions produced on this basis are characterized by high performance and small download size.

The advantages of React Native technology

  • fast implementation on two systems simultaneously
  • significant reduction of labor costs and publication time of the finished solution
  • high efficiency
  • small application size


Along with the creation of the application, we actively responded to user feedback regarding subsequent releases. Such a phased implementation of the solution on the market allows for establishing active communication with users and for quick introduction of new functionalities reported by them.

The high quality of implementation and innovation of the application has been recognized by the nomination of Mobile Trends Awards 2018 in the m-commerce category.

The scope of project

  • customer needs analysis and business workshops to determine the best solution
  • total re-design of the entire mobile channel
  • mobile applications for iOS and Android
  • adjusting the website to mobile devices
  • integration of the e-commerce system with business processes of stationary stores
  • solution maintenance

Business benefits

  1. Acquiring new customers through mobile channels – increasing the number of online orders.

  2. Consistency of Customer Feeling between web & mobile channels, as well as stationary stores – ease of use regarding online services by the end user.

  3. Maintain SEO position on Google and the URL addressing compatible with the version of the website, despite a technologically different web application.



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