Microsoft Outlook vs Proton Calendar

Microsoft Outlook9.2Visit Proton Calendar8.8Visit

Higher score Microsoft Outlook #2 in Calendar Apps 9.2/10 Free plan · 30-day trial Free planFree trial✓ 2 of 4 features Visit site

vs

Proton Calendar #6 in Calendar Apps 8.8/10 Free plan Free plan✓ 3 of 4 features Try Proton Calendar

• Microsoft Outlook fits best

  Microsoft-centered individuals and organizations

• Proton Calendar fits best

  Privacy-focused users wanting free scheduling

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Side by side

Feature	Microsoft Outlook 9.2/10 Visit ↗	Proton Calendar 8.8/10 Visit ↗
At a glance
Editor score	9.2	8.8
Ranking	#2 in Calendar Apps	#6 in Calendar Apps
Best for	Microsoft-centered individuals and organizations	Privacy-focused users wanting free scheduling
Pricing model	Free plan + paid	Free plan + paid
Starting price	$99.99/user/yr	—
Free plan	✓	✓
Free trial	30 days	—
Deployment	Cloud, Desktop, Mobile	Cloud, Desktop, Mobile
Platforms	Web, Windows, macOS, iOS, Android	Web, Windows, macOS, Linux, iOS, Android
Support	Docs	Email, Live chat, Docs
Integrations	7 integrations	6 integrations
Built for	Solo, Small business, Mid-market, Enterprise	Solo, Small business, Mid-market, Enterprise
Features Microsoft Outlook 2/4 · Proton Calendar 3/4
Shared calendars	✓	✓
Time blocking	Not checked yet	Not checked yet
Scheduling links	Not checked yet	✓ (best)
Video meeting support	✓	✓
Specs
Calendar sync	One_way	One_way
Mobile apps	Ios and android	Ios and android
Our review
Pros	Free account includes core scheduling, sharing, and recurring events Supports Teams, Zoom, Webex, Google Calendar, and more Works across web, Windows, macOS, iOS, and Android	End-to-end encryption for calendar events Free plan includes recurring events and invitations Booking pages, sharing, and Proton Meet links
Cons	Personal booking pages have separate licensing requirements Advanced Outlook capabilities require Microsoft 365 subscriptions Cloud storage and Outlook access vary by plan	External calendar synchronization is one-way Narrower integration set than general-purpose calendars Calendar is bundled with Proton Mail plans
Our verdict	Microsoft Outlook Calendar is the calendar and scheduling component of Outlook, designed for personal users, organizations, and teams. It covers appointments, recurring events, meeting invitations, reminders, free/busy planning, shared… Read the review →	Proton Calendar is an encrypted calendar service for individuals, families, and teams that want private event management. It supports event creation, recurring schedules, reminders, invitations, sharing, external calendar subscriptions,… Read the review →

Strengths and trade-offs

• Microsoft Outlook — where it wins

  • Free account includes core scheduling, sharing, and recurring events
  • Supports Teams, Zoom, Webex, Google Calendar, and more
  • Works across web, Windows, macOS, iOS, and Android

  Where it doesn't

  • Personal booking pages have separate licensing requirements
  • Advanced Outlook capabilities require Microsoft 365 subscriptions
  • Cloud storage and Outlook access vary by plan

• Proton Calendar — where it wins

  • End-to-end encryption for calendar events
  • Free plan includes recurring events and invitations
  • Booking pages, sharing, and Proton Meet links

  Where it doesn't

  • External calendar synchronization is one-way
  • Narrower integration set than general-purpose calendars
  • Calendar is bundled with Proton Mail plans

• Microsoft Outlook9.2/10 · Free plan · 30-day trial

  A flexible calendar choice for people and teams already working in Microsoft’s ecosystem.

  Visit siteFull verdict →
• Proton Calendar8.8/10 · Free plan

  A privacy-focused calendar with free scheduling tools and limited two-way sync.

  Try Proton CalendarFull verdict →