# To-do List: Time Management and Priority at a Glance

'To-do List' is an intuitive to-do management application that helps you manage your time efficiently in your daily life and work. Beyond a simple to-do list app, it helps users focus on important tasks and effectively manage deadlines through time-based progress visualization and priority setting functions.

## Main Features

### Time-based To-do Management
- **Start/End Time Setting**: Set the start and end times for each to-do to manage your schedule accurately.
- **Real-time Progress**: Visualize the current progress in real time within the set time. The remaining time is updated in seconds to help you manage your time accurately.
- **Color-based Urgency Indication**: The color changes depending on the remaining time. Green is displayed when there is enough time, orange is displayed when there is a medium amount of time, and red is displayed when the deadline is approaching, allowing you to intuitively identify the urgency.

### Priority Management
- **3-level Priority Setting**: You can set three priority levels: high, medium, and low, so you can easily distinguish important tasks. - **Priority-based sorting**: Your to-do list is automatically sorted by priority, so you can see important tasks first.

### Intuitive user interface
- **Material 3 design**: It provides a modern and stylish interface that follows the latest Material 3 design guidelines.
- **Dark mode support**: It supports dark mode to reduce eye fatigue even in dark environments.
- **Animation effects**: Improve user experience with smooth animation effects.

### Efficient to-do management
- **Swipe gestures**: Swipe from left to right to toggle the status of completed to-dos, and swipe from right to left to delete to-dos.
- **View details**: Tap on a to-do to view and edit its details.
- **Filtering function**: You can filter by viewing all to-dos, completed to-dos, and incomplete to-dos.
- **Search function**: You can search for to-dos by title or description.

### Data Management
- **Local Database**: All data is safely stored in the local database on the device, so that data is maintained even if the app is closed and restarted.
- **Data Backup**: Provides the ability to back up and restore important to-do data.

## Usage Scenarios

### Student
College student Mina has to manage various schedules such as assignments, exams, and club activities. She uses the 'To-do List' app to set due dates for each task and assign priorities. Thanks to the remaining time display that updates in real time, she can manage her studies efficiently without missing any upcoming assignments.

### Office Worker
Junho, who works at an IT company, has to manage deadlines for multiple projects at the same time. He sets start and end times for each task and assigns priorities to focus on important tasks. Thanks to the color-coded urgency display, she can see which tasks are due at a glance and handle them efficiently.

### Housewife
Soyoung, a mother of three, has to manage various schedules such as family schedules, housework, and personal appointments. With the intuitive interface and priority setting function of the 'To Do List' app, you can efficiently manage your household without missing important family schedules.

## Technical Features

### MVVM Architecture
- **Model**: Responsible for to-do data and related business logic.
- **View**: Responsible for the user interface, receives user input and passes it to the ViewModel.
- **ViewModel**: Acts as a mediator between the Model and the View, and is responsible for UI state management and business logic processing.

### Flutter Framework
- **Cross-platform**: Provides consistent user experience on both iOS and Android.
- **Responsive UI**: Utilizes Flutter's reactive programming model to automatically update the UI according to state changes.
- **Custom Widget**: Implemented a unique and intuitive UI with custom widgets based on Material Design.

### Database
- **SQLite**: Uses SQLite database to store local data.
- **Data Persistence**: User to-do data is maintained even when the app is terminated and restarted.

### Performance Optimization
- **Efficient Resource Management**: Optimized to minimize battery consumption and memory usage.
- **Fast Responsiveness**: Provides fast responsiveness that responds immediately to user input.

## Privacy Protection

The 'To Do List' app takes user privacy seriously. All data is stored only on the user's device and is not transmitted to external servers. Also, the app does not request unnecessary permissions and only stores the to-do information entered by the user.

## Future Plans

The 'To Do List' app aims to help users manage their time and improve their productivity through continuous improvement and addition of new features. Future features include cloud synchronization, recurring schedule setting, tag-based classification, statistics and analysis functions, etc.

This app will be the best tool for all users who need efficient time management and prioritization in their busy modern lives. With an intuitive interface and real-time visualization, users can focus on important tasks, not miss deadlines, and create a more productive daily life.