Fintech Mobile Suite
A regional bank needed to modernize their mobile banking experience. Their existing native apps were outdated, slow, and expensive to maintain with separate iOS and Android codebases. They wanted a single codebase that could deliver native performance while supporting new features like biometric authentication and real-time notifications.
Client Entity
Regional Bank
Core Tech Stack
Flutter
Lifecycle
10 months
Classification
Flutter Mobility
Global Availability
Multi-Region
Res_ID
BFS-PROJ-d73f8f
Arch_Level
L4_Enterprise
01. The Requirement
Separate iOS and Android apps meant double development and maintenance costs
App crashes occurred 2-3 times per week, frustrating users
Transaction processing took 8-12 seconds, causing user abandonment
No biometric authentication, requiring users to enter passwords repeatedly
Push notifications were unreliable, missing critical alerts
02. The Solution
We chose Flutter for cross-platform development, allowing us to maintain a single codebase while delivering native performance. We built the app with a focus on security, implementing biometric authentication, encryption, and secure API communication. We optimized the transaction flow to minimize latency and built a robust notification system.
- Built Flutter app with single codebase for iOS and Android
- Implemented Face ID, Touch ID, and fingerprint authentication
- Optimized API calls reducing transaction time from 12s to 2s
- Built real-time notification system using Firebase Cloud Messaging
- Created offline mode for viewing balances and transaction history
- Integrated fraud detection system with real-time alerts
- Added multi-currency support for international transactions
App crashes reduced from weekly to less than 0.1% of sessions
Transaction processing time decreased from 12 seconds to 2 seconds
User adoption increased by 180% in first 6 months
App store ratings improved from 2.8 to 4.6 stars
Development costs reduced by 40% with single codebase
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