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BusyCal vs Microsoft Outlook: catalog facts
BusyCal	Microsoft Outlook
Paid Costs $49.99 USD after a free 14-day trial, and is also included in Setapp.	Freemium Free app and account available; Microsoft 365 plans add paid features and Office apps.
macOS, iOS	Windows, macOS, Android, iOS, Web
Works with iCloud, Google, Exchange and CalDAV Highly customizable views including a Year Planner	Email, calendar and contacts for multiple accounts in one app Available on desktop, mobile and web
Apple platforms only Paid after the trial	Closed source and tied to Microsoft services Some features, including Copilot, require a paid plan
Downloadable app	Downloadable app, Web application
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
Official website Full listing and sources Checked September 23, 2026	Official website Full listing and sources Checked September 23, 2026

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