PesaFlow - Money Banking App
A modern mobile banking application with account management, transaction history, budgeting tools, and M-Pesa integration.
Key Engineering Achievements
The engineering decisions and challenges behind this project
Cross-Platform Mobile Architecture
Building a banking-grade app that runs natively on both iOS and Android without maintaining two codebases.
Used React Native with platform-specific optimizations for biometric auth (Touch ID, fingerprint), secure storage (Keychain/Keystore), and native animations.
Single codebase serving both platforms with native performance and security features.
Banking-Grade Security
Financial apps require the highest level of data protection and user authentication.
Implemented multi-layer security: biometric login, encrypted local storage, certificate pinning, session management with refresh tokens, and automatic logout on inactivity.
Bank-level security without compromising on user experience or login speed.
Smart Budgeting Engine
Users need intuitive tools to understand and control their spending.
Built a categorization engine that auto-tags transactions, tracks spending against user-defined budgets, and generates weekly/monthly insights with visual breakdowns.
Users gain clear visibility into their spending patterns with actionable budget alerts.
Project Analytics
A data-driven look at the project's architecture and performance
Development Priorities
Architecture
Developer's Note
“PesaFlow is where mobile development meets fintech. The biggest learning curve wasn't React Native itself — it was understanding that every millisecond of delay in a banking app erodes user trust. Security and speed are the same priority.”