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 of its functions can be adjusted easily and intuitively.

A dentist appointment is not a friend’s wedding, and your calendar should know the difference.
How and how often do you want to be reminded about 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, Google maps, HERE WeGo, Waze or
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 your complete calendar overview on your 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.

• Apple Watch app (iPhone)
• Apple Watch Complications: Modular (Small & Large), Utilitarian (Small, Small Flat & Large) & Circular, Extra Large, Graphic (Corner, Bezel, Circular, Rectangular)
• Apple Watch Watch Face support
• All events and reminders at a glance
• 8 views, 9 themes
• Spotlight integration
• Calendar Sets
• Custom colors for events and reminders
• Custom font sizes
• Location-based reminders
• Travel Time Support (Calculate travel times by car, on foot)
• Rich Notifications (Snooze..., Complete)
• 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-requisite 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
• 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 1.8.0

Hey Siri, Welcome Watch Face, Hello Shortcuts!

*New* Siri Shortcuts
*New* Apple Watch Face Support
*New* App Time Zone Support
Ongoing improvements and bug-fixes.

Ratings and Reviews

4.7 out of 5
123 Ratings

123 Ratings

tipsyshoes ,

Just keeps getting better!

What was already a great app has been made even better with version 1.6.0. Both fixes (e.g. search function) and new features (e.g. font sizing) have been implemented. The developer listens and delivers. Highly recommended still.

Old review: 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.

jnxtArt ,

I LOVE this calendar!

This calendar has a great interface, which is important to me. I love the day view where I can view my to-dos on the side along with a month calendar on the iPad. The iPhone version (which you don't have to pay for separately) is also functional. I love how you can customize colors within the app and most importantly that you can integrade the tasks into the calendar itself and that it allows you to give it due dates (unlike in iOS Reminders). You can sync your existing calendars and your tasks from the Reminders app seamlessly. As much as I loved Fantastical, its views on iOS is limited. Google Calendar is still my calendar backbone but I hate that it doesn't allow you to sync it with Reminders. So the tasks on there are only within the app. This was a great find.

PrincessMassacre ,

It’s perfect

It’s got natural language entry that supports time, location, a calendar picker and priority. Cause ain’t nobody got time for half-hearted natural language input. This app supports reminders beautifully and they have natural language entry as well. That’s another way this app is a winner. I love weekly views and the ones in this app are perfect after an older update they made. Developers are responsive to emails as well. Ignore anyone who says this app isn’t worth it or is hard use. It’s basically Informant 5 at a realistic price for the average person who doesn’t spend hours googling how to use a $25 app. Buy it and you won’t regret it. This app is very underrated for all the value it provides.


Vincent Miethe
51.8 MB

Requires iOS 10.3 or later. Compatible with iPhone, iPad, and iPod touch.


English, French, German, Italian, Japanese, Polish, Simplified Chinese, Spanish, Traditional Chinese

Age Rating
Rated 4+
© 2017-2019 n.spektor


  • Family Sharing

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

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