Building a Cross-Platform Retail App That Reached 50,000 Downloads in 90 Days
NexusRetail needed a high-performance Flutter app for both iOS and Android that could handle their 40,000-product catalogue and process hundreds of concurrent orders. We delivered in 10 weeks and the app hit 50,000 downloads in its first 90 days.
🎯 The Challenge
NexusRetail was running their retail operations through a slow, outdated web store that was not mobile-optimised. Their conversion rate on mobile was just 0.8% compared to an industry average of 2.5%.
They needed a native-quality mobile app that could handle a 40,000-product catalogue, real-time inventory sync, and support 500+ concurrent users during flash sales.
💡 Our Solution
We built a Flutter-based cross-platform application with a Node.js backend:
- Flutter for pixel-perfect iOS and Android apps from a single codebase
- Lazy-loading product catalogue with advanced filtering and search
- Real-time inventory sync using WebSockets
- Razorpay and PayU payment gateway integration
- Push notifications for order updates and flash sales
- Offline-first architecture for browsing without connectivity
- Admin dashboard for inventory and order management
📈 Results & Outcomes
- 50,000+ app downloads within the first 90 days post-launch
- Mobile conversion rate improved from 0.8% to 3.2% (4x improvement)
- App Store rating: 4.8/5 on both platforms
- Average order processing time: 2.1 seconds (down from 8.4 seconds on the old website)
- Flash sale peak handled 1,200 concurrent users without downtime
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