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Mobile

Flutter Personal Finance App

Cross-platform budgeting app with account aggregation, spending categories, savings goals, recurring-payment alerts, and encrypted local storage.

FlutterDartFirebaseSQLiteBiometric AuthenticationFCM
Flutter Personal Finance App

Technical Overview

How the solution is organized and why the structure matters.

Cross-platform budgeting app with account aggregation, spending categories, savings goals, recurring-payment alerts, and encrypted local storage. The technical blueprint separates responsibilities into clear layers so the solution can be tested, explained, extended, and handed over confidently.

System Architecture

Four clear layers keep responsibilities understandable and maintainable.

01

Presentation layer

Organizes screens, navigation, responsive states, accessibility, and reusable visual components.

02

State and domain layer

Keeps business rules independent from widgets and manages predictable local state.

03

Device and service integration

Connects camera, notifications, storage, and remote APIs behind testable interfaces.

04

Release layer

Handles environment configuration, permissions, error reporting, packaging, and store-ready builds.

Technology Stack

The practical role of each technology in this project.

Flutter

Single codebase for responsive Android and iOS application interfaces.

Dart

Application language for strongly typed cross-platform mobile logic.

Firebase

Managed authentication, data synchronization, storage, and mobile services.

SQLite

Supports the project's Mobile implementation, integration, or evaluation requirements.

Biometric Authentication

Supports the project's Mobile implementation, integration, or evaluation requirements.

FCM

Reliable cross-platform push notification delivery.

Implementation Workflow

A reviewable path from requirements to tested handover.

01

Requirements and constraints

Confirm users, inputs, outputs, acceptance criteria, platform limits, and delivery scope.

02

Architecture and prototype

Validate the highest-risk technical decisions with a small working baseline before full implementation.

03

Implementation and integration

Build in reviewable modules, connect the selected technologies, and document key decisions.

04

Verification and handover

Test expected and failure paths, review outcomes, and prepare technical documentation and guidance.