Calendar Op.2 [opus two] is a simple and beautifully designed calendar, planner, and agenda app for iPhone and iPad. Stay organized with a clean monthly view, intuitive vertical scrolling, and fast schedule management. Whether you're planning work, personal events, family activities, or daily tasks, Calendar Op.2 helps you manage your time without unnecessary complexity. Unlike traditional calendar apps, Calendar Op.2 allows you to scroll naturally through months while keeping your schedule easy to read and understand.
Made for iPhone Duo.
Folded or unfolded, your calendar fits the screen beautifully.
Stay organized.
Your month and your day, side by side.
Tap a day.
See your plans instantly.
Make it yours.
Text size, week start, and more.
Just as good on iPhone.
Calendar, list, and day details — always one tap away.
What's new in 3.0
Full support for iPhone Duo
Month and list side by side on the large inner display — and your familiar iPhone layout when folded. It switches automatically as you open and close it.
Optimized for iOS 27.1
The whole app has been tuned for the latest iOS.
Refreshed for Liquid Glass
Buttons and the day pop-up, redesigned with the new glass look.
Features
- Clean vertical scrolling calendar
- Beautiful monthly planner view
- Easy-to-read agenda and event list views
- Event titles displayed directly on the calendar
- Quick daily event pop-up window
- Fast incremental search
- Copy and paste events
- Smooth month-to-month navigation
- Sync with iCloud Calendar, Google Calendar, Outlook, Exchange, and other calendars supported by iOS
- Works seamlessly with the built-in iOS Calendar system
Perfect for
- Personal scheduling
- Work and business planning
- Family calendars
- School schedules
- Daily task organization
- Long-term event planning
Why people love it
- Simple and intuitive
- Fast and responsive
- Clean and distraction-free design
- Easy-to-read monthly calendar
- Smooth vertical scrolling experience
- Designed for people who prefer simplicity
Ready to simplify your schedule?
If you're looking for a simple calendar, monthly planner, agenda, or schedule organizer that stays out of your way and helps you focus on what matters, Calendar Op.2 is the perfect choice.
Trusted by thousands of users worldwide.