Our client is a renowned German IT solutions provider specializing in mobile commerce technologies. Their software powers a wide range of retail innovations, including mobile payments, Scan & Go, smart vending, self-checkout, and customer analytics — driving operational efficiency and improving the shopper journey for many retailers across Germany.
The project aimed to elevate the mobile shopping experience for a national retail chain through a comprehensive redesign of its native Android and iOS applications. Our mission:
The client chose GP Solutions for our proven track record in mobile development, excellent communication, and seamless integration into distributed teams. Our specialists rapidly aligned with the client’s agile workflows, demonstrating both technical competence and cross-functional collaboration.
We engineered an API to connect the client’s newly built website backend with the mobile apps, ensuring data consistency and unlocking real-time search functionality across platforms.
To make product discovery even more effortless, we integrated a barcode scanner accessible via dynamic shortcuts, allowing users to scan items directly from their device’s home screen.
3D Catalog Integration Using a pre-selected third-party library, we built a custom integration between the client’s native app and their 3D product catalog, enhancing visual engagement and driving conversion.
Compliance & Data Privacy Our team implemented critical privacy features, including:
We conducted extensive refactoring to eliminate legacy bugs and upgraded outdated codebases, delivering a faster, more stable app experience.
We addressed navigation issues that previously disrupted the shopping journey. Enhancements included:
Thanks to the app overhaul, the retail chain now offers a significantly improved digital shopping experience. Customers enjoy intuitive navigation, fast search, visual product discovery, and trusted data handling.
Android: Java (Android 7-11.0), Kotlin (1.3-1.5.31), FasterXml, STAX, Moshi, AndroidX, OkHttp3, Volley, Ingenico, Firebase, Google Play Services, ZXing, Blaetterkatalog.
IOS: Swift 5-5.5, UIKit, Combine, Firebase, GoogleAppMeasurement, GoogleDataTransport, GoogleUtilities (Network, Logger), FlexibleRowHeightGridLayout, InAppSettingsKit, KeychainAccess, MBProgressHUD, MultiSlider, nanopb, SwiftGen.
Custom mobile app development
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Web Application Development 
Enterprise Software Development 
UI/UX Design 
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