DebtMate: Peer-to-Peer Debt Tracking
DebtMate is a Flutter Android mobile application designed to simplify tracking shared expenses, partial payments, and group balances.
The core challenge
Friends and colleagues lack a simple, shared tool to log peer-to-peer debts, leading to awkward calculations and complex calculations.
Key Requirements
- •Secure user profile setup with email/password and Google authentication.
- •Real-time database sync for shared balances, group logs, and payment states.
- •Expense split calculator supporting equal and custom splits.
Architectural Breakdown
- ✓Mobile Frontend: Flutter Android app using Riverpod for clean state handling.
- ✓Backend Services: Google Firebase infrastructure managing auth and database sync.
- ✓Navigation Core: Declarative routing configured through go_router.
Implementation Strategy
We developed the app in Flutter and Dart, wiring Firebase Firestore rules to sync balances, manage group dependencies, and handle local attachments.
Technical Decisions
- •Chose Riverpod for state management due to its testability and clean provider models.
- •Implemented Firebase Auth to support secure Google and email login flows.
Key Challenges Solved
- •Handling original transaction currency preservation across shared groups was resolved by storing transactions with explicit currency properties.
Quality Assurance & Testing
Conducted exploratory manual testing on multiple Android devices, simulating partial network connection states to verify data sync behavior.
Project Outcome
Built an Android-first debt tracking application with cloud synchronization, group expense management, split logic, payments, reminders, reporting, and multi-currency support.
Technology Stack
Related Engineering Services
Custom Software Development
Build bespoke SaaS platforms, robust business portals, and secure databases engineered to fit your specific operational logic.
Mobile App Development
Deploy Android-focused mobile applications, utilizing Flutter which allows shared Android and iOS codebases when cross-platform delivery is appropriate.
Software QA Testing
Ensure bug-free releases with professional manual testing, automated end-to-end regression suites, and accessibility audits.
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