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FinTechFinancial Technology App
Beepex
A Nigerian fintech app for wallet, bill payments, and gift cards. Now live on Google Play, with the iOS App Store build in preparation. Wallet runs on Paystack, bill payments (airtime, data, cable TV, electricity) run on Flutterwave, and the backend runs on 18+ Supabase edge functions with audit-trail logging and PIN-protected flows.
FlutterRiverpodSupabasePaystackFlutterwave
Headline
Live on Google Play, iOS App Store in preparation
01 The brief
What they needed.
Beepex needed a financial app that people would actually trust with their money. That meant rock-solid security, no downtime, and a user experience clean enough that someone could top up airtime or settle an electricity bill in under 30 seconds. The app had to handle a real wallet, four kinds of bill payments, and gift card redemption, and every transaction had to leave an audit trail. In fintech, one broken payment and the user is gone.
02 Our approach
How we built it.
We built the app in Flutter with Riverpod 3.1 for state, GoRouter for navigation, fpdart for typed error handling, and a clean architecture split across features (auth, wallet, bills, gift cards, profile), core utilities, services, and models.
The wallet is Paystack-powered with PIN-protected transfers. Bill payments run on Flutterwave covering airtime, data, cable TV subscriptions, and electricity, with saved templates for recurring bills.
The backend lives on 18+ Supabase edge functions handling wallet-* operations, flw-* bill processing, gift card redemption, push notifications, and broadcast messaging. Every transaction writes an audit-trail log and every sensitive action requires a PIN. Runtime protection uses freerasp and secrets are kept in flutter_secure_storage.
03 Outcomes
What shipped.
Concrete results, not promises. Each line is something the client now has in production.
Live on Google Play, with the iOS App Store build in preparation
Wallet, four bill categories (airtime, data, cable TV, electricity), and gift cards in a single app
18+ Supabase edge functions handling wallet, bills, gift cards, and notifications
Biometric and PIN-protected flows on every sensitive action
Audit-trail logging on every transaction with runtime protection via freerasp
04 Stack
FlutterRiverpodSupabasePaystackFlutterwave
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