** This app does not access your Contact List or Calendar. **
CalendarDuo allows users to switch between two calendars at their fingertips!
CalendarDuo is the best tool for:
- Frequent flyer between two countries/regions
- Organizing events with family members or relatives overseas
- Scheduling meetings and tasks with colleagues overseas
- Planning trips to another country/region
- ANYONE who needs a simple calendar!
Top features
- Switching between TWO world calendars INSTANTLY
- Duo-view displaying ONE calendar with holidays of TWO countries/regions
- User interface with multiple language selection
- Daylight Saving Time (DST) dates
- Currency exchange rate (for currencies available in Europe Central Bank)
- World clock
- Adding notes
CalendarDuo is the simplest calendar you’ll ever need!
NEW! 2026 holidays are available now!
- public holidays
- bank holidays
- statutory holidays
- regional holidays
- provincial holidays
- special days
NEW! 2022 World Calendars (more are coming!):
- Australia
- Canada
- China (PRC)
- France
- Germany
- Hong Kong
- India (Maharashtra, New Delhi)
- Indonesia
- Italy
- Japan
- Macau
- Malaysia
- Philippines
- Portugal
- Singapore
- South Korea
- Taiwan
- Thailand
- United Kingdom
- United States
- Vatican City
Holiday information is gathered from government official releases. Source details can be found on each Holiday List.
