Overview:
A mid-size logistics company had an app that simply couldn’t keep up anymore. Users complained about slow load times, inconsistent UI across Android and iOS, and frequent crashes during high-traffic hours. But the real problem wasn’t visible at first glance. The app looked functional, but the internal structure had hidden issues. The architecture was holding the business back.
That’s when they approached us but not just to “fix the app,” instead of rebuilding an experience strong enough to support their next 5 years of growth. What followed was a complete Flutter-powered transformation.
Technical Audit & Architecture Mapping
- Analyzed 27 legacy screens and identified 41 code-level bottlenecks
- Ran performance profiling using Flutter DevTools, Firebase Crashlytics, and Sentry
- Mapped out core flows (parcel tracking, driver routing, customer notifications)
UX Redesign & Component System Setup
- Built wireframes in Figma
- Created a reusable Flutter component library using Riverpod, Bloc, and Material 3
- Designed new UI patterns optimized for sub-200ms interactions
Flutter App Development
- Rewrote the app with clean architecture + MVVM
- Implemented real-time updates using Firebase Realtime Database
- Added offline mode with Hive local storage
- Integrated push notifications with Firebase Cloud Messaging (FCM)
Testing, Deployment & Rollout
- Performed 168 automated tests using Flutter Test + Mockito
- Load-tested API calls with JMeter
- Released the new version with phased rollout using Google Play Internal Track
- Full deployment completed in 11 weeks
Fragmented Experiences & Unscalable Architecture
The earlier mobile app looked simple but created major operational frustrations
From Code Overhaul to Full-Scale App Optimization
- Client Requirements
- Framework Design
- Feature Build-Out
- Dashboard & App Optimization
Complex Workflows & High Traffic Requirements
Heavy Real-Time Data Updates
Tracking data refreshed every 8 seconds, causing the old app to freeze. Making smooth real-time updates without memory drain essential.
Weak Offline Support
Drivers lost data mid-route. Frequent mid-route data loss required to add smooth, error-free caching.
Multiple APIs with Unpredictable Response Times
Some APIs responded in 3 seconds or more, causing UI blocking. The challenge was to add queueing and background processing.
High Crash Rate
Crashlytics flagged 51 unique crash patterns. We had to fix stability issues before building anything new.
A Faster, Cleaner & More Engaging Flutter Experience
The new Flutter app delivered tangible improvements:
74% Increase in Weekly Active Users
After redesigning there was a performance boost and engagement jumped significantly.
92% Crash Reduction
The crash rate fell from 9.4% to 0.7%.
41% Faster Feature Development Cycle
Reusable components and clean architecture reduced dev time per screen.
