HachiCalendar

HachiCalendar has been online for 15 years and is a comprehensive productivity tool covering study, work, and daily life. This version provides the same features as the Pro version (with ads, removable):

1. AI Smart Assistant: 
Supports fast voice and text input as well as schedule analysis, and AI features can be hidden from the toolbar as needed.

2. Multi-view System: 
Includes day, week, month, and year views, each with in-depth customization options.

3. Quick Gestures: 
Supports single tap to select, double tap to jump, long press for a multifunction menu, and swipe to switch months.

4. Drag & Drop Operations: 
In month view, long-press and drag events to easily move or delete them.

5. Custom Date Markers: 
Long-press a date to set background colors for clearly distinguishing rest days, overtime, classes, and more.

6. Unified Task Management: 
Includes Todo mode to seamlessly integrate schedules and to-do items.

7. Image Attachments: 
Allows adding images to events, with thumbnails displayed in month view.

8. Flexible Export: 
Supports exporting schedules as images by date or calendar, or sharing them via email.

9. Custom Colors: 
Set personalized colors for different events with convenient color management.

10. Multiple Themes: 
Built-in seasonal, holiday, and weather themes to meet diverse aesthetic preferences.