For all your plans!

Appointments and to-dos, meetings and deadlines, birthdays and dates - make the most of your time with Calendar 366!
Anything a calendar can do, Calendar 366 can do better - and all functions can be adjusted easily and intuitively.

A dentist appointment is not a friend’s wedding - make your date calendar get the difference.
How often and how exactly do you want to be reminded of what’s important?
Create a calendar that matches your preferences and priorities.

Pick your preferences – year or month, week or day, list or agenda, from light red to dark to darkest blue...

Create your dates by natural text input, for example:
"Meeting tomorrow 10:30-12:00, Melrose Ave /work", or "Sauna! next Sunday 3pm -360", or simply "time to read tomorrow" – any way you like it.
Easily find and change events and reminders, repeat them, add attachments*, and create notes without any hassle.

Sync documents and attachments easily with all devices via iCloud*.
Easily send, accept or decline invitations.
Find a location on the go: simply search, save, and open in Apple or Google maps.
Find your events via Spotlight. Organise your events & to-dos with Calendar Sets...

See all that’s important today with the Calendar 366 Today widget.

Of course, Calendar 366 also works on the Apple Watch - giving you the complete calendar overview directly at the wrist.
Simply use voice input to create new events or reminders.

Calendar 366 II is fully localized in English, German, Spanish, French, Japanese, Italien, Polish and Chinese (Simplified).

• Apple Watch app (iPhone)
• Apple Watch Complications: Modular (Small & Large), Utilitarian (Small, Small Flat & Large) & Circular, Extra Large, Graphic (Corner, Bezel, Circular, Rectangular)
• All events and reminders at a glance
• 8 views, 9 themes
• Spotlight integration
• Calendar Sets
• Share your events and reminders via Mail, WhatsApp, Messages, Signal etc...
• Key Commands for external keyboards
• Easy, intuitive creation, copying and moving of appointments and reminders by drag & drop
• Easily invite attendees and manage invitations
• No pre-requisites setup (All iOS supported calendar services available: iCloud, Google, Exchange, Outlook, CalDAV)
• Compatible on all Apple devices (iPhone, iPad, Mac)
• Add or modify calendars and lists
• All views optimized for portrait or landscape
• Time zone support
• English, German, French, Japanese, Italien, Polish, Chinese (Simplified)
• Complex repeating rules
• Week numbers
• Complete reminders with a tip
• Super Retina support

Questions and Contact, @nspektorapps,

*Calendar 366 or Calendar 366 II for macOS & iCloud account required

What’s New

Version 1.4.2

• Possible battery drain issue fixed
• Watch App & Complications improvements
• Open URL improvements
Ongoing improvements and bug-fixes.

Ratings and Reviews

4.3 out of 5
29 Ratings
29 Ratings
rondfranks ,

Complication Update

Great app, but the complication on the watch show's yesterday's date.
Tried again today, but now it's showing the date of the next holiday. I'd rather see today's date instead.

Developer Response , - Thanks!

tipsyshoes ,

What a fantastic developer!

With this latest update the developer has provided enhanced capabilities and even a few fixes. This is an excellent example of a developer listening to customer feedback and then coming through. For my money Calendar 366 is the best choice. Highly recommended.

Old review: Yes, Calendar 366 is genuinely a fine agenda and reminder app. However, this is eclipsed by the developer’s dedication to the customer. When I reported a problem with the location search feature the developer listened, agreed that there was indeed a bug and produced a fix in less than forty-eight hours! Now Calendar 366 is feature packed and flawlessly executed. Highly recommended without hesitation.

JayPHX ,

Giving you 1 star because

You were so persistent to ask for a review. Trying to navigate through the settings and all it kept doing with every click was ask for a review. So here you go


Vincent Miethe
46.6 MB
Requires iOS 9.3 or later. Compatible with iPhone, iPad, and iPod touch.
English, French, German, Italian, Japanese, Polish, Simplified Chinese, Spanish
Age Rating
Rated 4+
© 2017-2018 n.spektor


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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