For all your plans!
Your events and tasks, everywhere. Fast, native, and privacy-focused on iPhone, iPad, Apple Watch, and Mac – with an interface that just feels right.
Everything you (probably) need
Events
Create events in seconds using natural language. Set durations with a single tap, add time zones, reminders, recurring schedules, and more.
Tasks
Plan and structure your tasks. Right in your calendar – with reminders, location-based alerts, priorities, notes, and much more.
Views
More views than you (probably) need – in portrait and landscape. Choose the view that fits the way you plan – or quickly switch via swipe and tap.
Meetings
Schedule Zoom, Google Meet, and Microsoft Teams meetings with a single tap. Join any meeting link directly from your event – Webex, Skype, FaceTime, and many more.
Calendar Sets
Create sets of calendars and lists to quickly switch what's visible. Always in sync across all your devices.
Attendees
Invite people to your events and meetings and see their status. New invites land right in your inbox – accept or decline with a tap.
Categories
Color-code your events and tasks with categories and labels. Easy to distinguish, easy to find.
Travel Time
Never miss the time to leave. Travel time updates automatically based on your location – by car, by bike, or on foot.
Light or dark – whatever you fancy.
Calendar 366 comes with 3 themes and 9 accents. Light, dark, or black – pick your theme. Then choose your favorite accent to set the mood. Mix and match until it feels right.
No calendar left behind
System
iCloud
Google
Outlook
Microsoft 365
Todoist
Zoom
FastmailCalDAV
Subscriptions
Compact but complete
- 10 different views
- Portrait and landscape
- Time to leave notifications
- Location-based reminders
- Manage events and tasks on Apple Watch
- Complications for Apple Watch
More screen, more overview
- Any view, any combination
- Full menu bar calendar on macOS
- Natural language input
- Apple Shortcuts support
- Multi-window support on iPad
- Keyboard shortcuts
Natural language, nothing fancy
Create events and tasks using natural language. Just type what, when, and where – and refine with options.
At a glance
Apple Watchable
Calendar 366 on your wrist. Check your schedule, create events and tasks, mark them done, or delete them — right on your Apple Watch. Complications and widgets keep your day in sight.
Widgets everywhere
Calendar 366 comes with 20 home screen and desktop widgets, 6 lock screen widgets, and 10 watch complications. Your schedule, always within reach.
Your calendar, by chat
Connect Calendar 366 to your favorite AI assistant via the Model Context Protocol (MCP). Show your schedule, create events and tasks, reschedule, or duplicate — all through natural conversation.
Available on Mac.
Claude Desktop
Manage your events and tasks in Calendar 366 directly from Claude Desktop.
Learn more
Shortcuts & URL Scheme
Calendar 366 supports Apple Shortcuts and provides a powerful URL scheme for automation. Integrate Calendar 366 with other apps or create your own workflows.
Examples
Frequently Asked Questions
Can I use Calendar 366 without a subscription?
Yes. Calendar 366 is a free download with basic features. You can try all premium features for 7 days. After that, choose a subscription or a one-time purchase.
How do I cancel my subscription?
Go to your App Store subscription settings.
Calendar 366 is not accepting my iCloud password
You need to enable two-factor authentication and generate an app-specific password to log in to iCloud. Generate an app-specific password at:
For more information visit:
How do I start over?
If you're having issues with a specific account, go to Settings → Accounts → select the account → Reset Sync-Data.
For a full reset on iOS, delete and reinstall the app.
On Mac, quit Calendar 366, delete the following folder and restart your Mac:
/Users/USERNAME/Library/Group Containers/346J24NQNV.com.nspektor.Calendar366
My events or reminders are not showing up
If your Apple Watch is not showing any events, open Calendar 366 on your iPhone to trigger the initial sync.
If no events or reminders are showing at all, check your permissions in System Settings → Privacy & Security → Calendars / Reminders and make sure Calendar 366 has access.
Can I import .ics files?
Yes. Open an .ics file directly, share a link via the share extension, or use the URL scheme. For web links, Calendar 366 will ask if you want to import the event or create a subscription.
Does Calendar 366 support shared calendars?
Yes. Shared calendars are fully supported and displayed like any other calendar. To share a calendar, use your provider's settings:
Why are my events showing the wrong time?
Check the time zone of the event itself. Then check your system time zone settings under System Settings → General → Date & Time. Also check the time zone settings in Calendar 366 under Settings → General.
How do I set a default calendar?
You can set a default calendar and list per calendar set – either a fixed one or the last used one. Go to Settings → Calendar Sets and select your set.
Where can I download older versions?
If you purchased an older version from the App Store, go to App Store → My Purchases. Otherwise, download here:
Request your license key by email (Paddle purchases only):
Download Calendar 366 Free
One app, all your Apple devices. Available in 12 languages as a universal purchase.
Your data stays yours. No account required, no analytics, no tracking. Calendar 366 doesn't collect or send any data to its own servers.
