Nexus – Personal Productivity & Life Management App

Nexus is a cross-platform mobile application built with Flutter that helps users manage daily tasks, personal journals, and life highlights in a single unified platform. The app combines productivity tools with reflective journaling to support both organization and personal well-being.

📱 Features

🔐 Authentication

• Email & Password registration and login
• Google Sign-In (OAuth 2.0)
• Secure session management
• Persistent login using SharedPreferences

✅ To-Do Management

• Create multiple to-do lists
• Add, update, and delete tasks
• Mark tasks as completed
• Real-time task search and filtering

📔 Journal Management

• Create and edit personal journal entries
• Tag-based organization
• Chronological journal history
• Full-text search across entries

🏠 Dashboard & Highlights

• Personalized dashboard after login
• Daily greeting
• Daily highlights with image uploads
• Overview of tasks and activities

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🧱 System Architecture

Nexus follows a client–server architecture:

• Frontend: Flutter (Dart)
• Backend: Firebase (Authentication, Firestore, Storage)
• Database: Cloud Firestore (NoSQL)
• Storage: Firebase Storage for image uploads

The app is designed using a modular architecture with clear separation between UI, business logic, and data services.

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🛠️ Technology Stack

Frontend

• Flutter (3.9.2+)
• Dart
• Material Design 3
• SharedPreferences
• Image Picker
• Intl (Date & Time formatting)

Backend

• Firebase Authentication
• Cloud Firestore
• Firebase Storage
• Google Sign-In

Tools

• Android Studio / VS Code
• Flutter SDK
• Firebase CLI & FlutterFire CLI
• Git & GitHub

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🗂️ Data Model (Firestore Collections)

• todo_lists – stores user-created to-do lists
• todo_tasks – stores tasks linked to lists
• journal_entries – stores journal content, dates, and tags
• highlights – stores daily highlight images and metadata
• user_profiles – stores user profile information

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