This is a "desktop reminder" app. It allows users to manage tasks by adding new tasks, which can be set with name, content, reminder type (one-time, recurring, countdown, all day), and specific date and time. Main features include: Task creation and management: Users can add new tasks, edit existing tasks, and delete them. Reminder types: Supports multiple reminder types, but currently mainly supports one-time reminders with countdowns. Notifications: Integrates with user notifications to schedule and display reminders to users. It also contains authorization and settings checks for notifications. Task filtering and search: Users can filter tasks by "All", "Today", "This week", and "This month", and can also search for tasks by name or content. Time tracking: Displays the remaining time for each task. Quick reminders: Provides quick action buttons for setting reminders for 5, 10, 15, and 25 minutes in the future. User interface: Has a clean and intuitive interface with input fields, date pickers, and a list to display tasks.