Alternatives · Calendar
Calendar 366 alternatives
Calendar 366 compared with 6 alternatives: Fantastical, BusyCal, Calendars by Readdle, Apple Calendar, Dato and 1 more.
Calendar 366 has a free plan. Paid plans start at $19.99 per year for Pro on the App Store. 5 of the 6 alternatives are free or have a free plan. One more offers a free trial.
6 tools · Listings checked up to Oct 9, 2026 · Where the facts come from
At a glance
| Tool | Price | Free plan | Runs on |
|---|---|---|---|
| Calendar 366This tool | Free plan · from $19.99/yr | Yes | macOS, iOS |
| Fantastical | Free plan · from $4.75/mo | Yes | macOS, Windows, iOS |
| BusyCal | Free plan · from $49.99 one-time | Yes | macOS, iOS |
| Calendars by Readdle | Free plan · from $19.99/yr | Yes | macOS, iOS |
| Apple Calendar | Free | Free | Web, macOS, iOS |
| Dato | Free trial · from $18 one-time | Trial only | macOS |
| WeekCal | Free plan · from $7.49/yr | Yes | macOS, iOS, Android |
How each one differs from Calendar 366
- Free plan · from $4.75/mo
Fantastical
Calendar and tasks app for Apple devices and Windows
- Fantastical starts at $4.75 per month, billed annually ($6.99 billed monthly). Calendar 366 starts at $19.99 per year for Pro on the App Store.
- Only Fantastical lists a Windows app.
- Calendar 366 can be bought with a one-time purchase.
- Fantastical also covers templates and booking links.
- Calendar 366 also covers menu bar app.
Suits: People with Google, iCloud and Microsoft calendars who want them in one app
- Free plan · from $49.99 one-time
BusyCal
Customizable calendar and task app for Mac and iPhone
- BusyCal starts at $49.99 one-time for Mac, or $39.99 per year on the Mac App Store; iOS app $9.99. Calendar 366 starts at $19.99 per year for Pro on the App Store.
Suits: Mac users who want fine control over how their calendar looks
- Free plan · from $19.99/yr
Calendars by Readdle
Calendar and task planner for iPhone, iPad, Mac and Apple Watch
- Calendars by Readdle starts at $19.99 per year, or $3.99 per month (US App Store in-app purchases). Calendar 366 starts at $19.99 per year for Pro on the App Store.
- Calendar 366 can be bought with a one-time purchase.
- Calendars by Readdle also covers habit tracking.
- Calendar 366 also covers menu bar app.
Suits: People on iPhone, iPad and Mac who want events and tasks in one planner
- Free
Apple Calendar
Free built-in calendar for iPhone, iPad, Mac and iCloud.com
- Apple Calendar is free. Calendar 366 starts at $19.99 per year for Pro on the App Store.
- Only Apple Calendar lists a web app.
- Calendar 366 can be bought with a one-time purchase.
- Calendar 366 also covers menu bar app.
Suits: People with an iPhone, iPad or Mac who want a calendar at no cost
- Free trial · from $18 one-time
Dato
Mac menu bar calendar with world clocks and meeting alerts
- Dato starts at $18 one-time purchase on the Mac App Store. Calendar 366 starts at $19.99 per year for Pro on the App Store.
- Calendar 366 has a free plan. Dato does not, though it has a free trial.
- Only Calendar 366 lists an iOS app.
- Calendar 366 also covers tasks and natural-language input.
Suits: Mac users who want their schedule one click away in the menu bar
- Free plan · from $7.49/yr
WeekCal
Customizable calendar app with event templates and color rules
- WeekCal starts at $7.49 to $39.99 per year for Annual Pro, as listed on the App Store. Calendar 366 starts at $19.99 per year for Pro on the App Store.
- Only WeekCal lists an Android app.
- Calendar 366 can be bought with a one-time purchase.
- WeekCal also covers templates.
- Calendar 366 also covers natural-language input and menu bar app.
Suits: iPhone and iPad users who want more control than the built-in calendar gives
Limits worth knowing in Calendar 366
- Apple only: iPhone, iPad, Apple Watch and Mac. No Android, Windows or web version is listed.
- After the 7-day trial the free download keeps only basic features, and the vendor does not publish which features are premium.
- Prices appear only as App Store in-app purchases. Several have no billing period, and no monthly price for single-user Pro is shown.
- Siri AI is in beta, English only, and needs iOS, iPadOS or macOS 27. The MCP connection to AI assistants is Mac only.
Common questions
What are the alternatives to Calendar 366?
The alternatives to Calendar 366 in this directory are Fantastical, BusyCal, Calendars by Readdle, Apple Calendar, Dato and WeekCal. Each one has a side-by-side comparison with Calendar 366.
Is there a free alternative to Calendar 366?
Yes. Apple Calendar is free to use. Fantastical, BusyCal, Calendars by Readdle and WeekCal have a free plan alongside paid ones.
Which Calendar 366 alternatives work on Windows?
The Calendar 366 listing does not include a Windows app. Fantastical lists one.
Which Calendar 366 alternatives work on Android?
The Calendar 366 listing does not include an Android app. WeekCal lists one.
When were these prices checked?
Each listing shows its own date. On this page they run from Oct 4, 2026 to Oct 9, 2026. Vendors change prices without notice, so confirm on their site before you buy.
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