Priority Planner

A high-performance, mobile-first daily planner and habit tracker built with React Native.

Designed to bridge the gap between long-term planning and daily execution, this application features rule-based task recurrence, dynamic tagging, and on-device data persistence.

🚀 Key Features

• Rule-Based Recurrence: Users can assign specific days of the week to a task (e.g., M/W/F). The application uses dynamic filtering to surface these tasks automatically on the correct days without database bloat.
• Lazy-Evaluated Task Resets: Recurring tasks automatically "uncheck" themselves at midnight. This is handled via lazy evaluation—storing arrays of completed timestamps rather than relying on heavy, battery-draining background cron jobs.
• Dynamic Custom Tagging: Users can generate custom tags on the fly (e.g., "Graph Theory", "Gym", "Job Hunt"). The app instantly computes a unique Set of all active tags and renders them as clickable filter chips.
• Multi-Dimensional Filtering: Tasks can be instantly filtered by priority tier (P1, P2, P3) or by user-generated tags.
• Native OS Integration: Leverages the device's native haptic engine for tactile feedback during CRUD operations, and utilizes native OS keyboard dictation for seamless Speech-to-Text input.

🧠 Technical Architecture

As a developer, my primary focus was balancing a fluid UI with scalable state management.

• Global State (Context API): I opted for React's Context API over Redux. Given the centralized nature of the Task data array, Context provided the perfect balance of global accessibility across the "Today" and "Calendar" tabs without introducing unnecessary boilerplate.
• Data Persistence (AsyncStorage): The app features a custom useEffect hook layer inside the Context Provider that continuously syncs the active state to the device's local memory using @react-native-async-storage/async-storage. This ensures zero data loss across app restarts.
• Optimized Rendering: The SwipeListView component is configured to prevent clipping during layout animations, ensuring that checking off or deleting a task results in a buttery-smooth 700ms UI glide rather than a jarring snap.

🛠️ Built With

• Framework: React Native / Expo
• Language: TypeScript
• Storage: AsyncStorage
• UI Components: React Native Calendars, SwipeListView
• Hardware APIs: Expo Haptics

💻 Running Locally

To run this project on your own machine:

1. Clone the repository
2. Install dependencies: npm install
3. Start the Expo server: npx expo start
4. Scan the QR code with the Expo Go app on your physical iOS or Android device.