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BusyCalCalendars by Readdle
Paid

Costs $49.99 USD after a free 14-day trial, and is also included in Setapp.

 Free

Free to download from the App Store and as a Mac download.

macOS, iOS macOS, iOS
  • Works with iCloud, Google, Exchange and CalDAV
  • Highly customizable views including a Year Planner
  • Natural language event creation
  • Calendars and tasks in one view
  • Apple platforms only
  • Paid after the trial
  • Apple platforms only
  • No Windows or Android version
Downloadable app Downloadable app
Closed source Closed source
License not stated License not stated
Not stated if an account is needed Not stated if an account is needed
Not stated if it works offline Not stated if it works offline

Checked September 23, 2026

Checked October 1, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.