Zoho Calendar vs Proton Calendar

Zoho Calendar9.1Visit Proton Calendar8.8Visit

Higher score Zoho Calendar #3 in Calendar Apps 9.1/10 Free plan Free plan✓ 4 of 4 features Visit Zoho Calendar

vs

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

• Zoho Calendar fits best

  Budget-conscious teams needing rich scheduling

• Proton Calendar fits best

  Privacy-focused users wanting free scheduling

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Side by side

Feature	Zoho Calendar 9.1/10 Visit ↗	Proton Calendar 8.8/10 Visit ↗
At a glance
Editor score	9.1	8.8
Ranking	#3 in Calendar Apps	#6 in Calendar Apps
Best for	Budget-conscious teams needing rich scheduling	Privacy-focused users wanting free scheduling
Pricing model	Free plan + paid	Free plan + paid
Starting price	Free plan	—
Free plan	✓	✓
Free trial	—	—
Deployment	Cloud, Mobile	Cloud, Desktop, Mobile
Platforms	Web, iOS, Android	Web, Windows, macOS, Linux, iOS, Android
Support	Email, Live chat, Phone · 24/7	Email, Live chat, Docs
Integrations	15 integrations	6 integrations
Built for	Solo, Small business, Mid-market, Enterprise	Solo, Small business, Mid-market, Enterprise
Features Zoho Calendar 4/4 · Proton Calendar 3/4
Shared calendars	✓	✓
Time blocking	✓ (best)	Not checked yet
Scheduling links	✓	✓
Video meeting support	✓	✓
Specs
Calendar sync	Two_way	One_way
Mobile apps	Ios and android	Ios and android
Our review
Pros	Free standalone plan plus $1 annual entry tier Two-way Google and Outlook Calendar synchronization Booking pages, room booking, and video-conferencing integrations	End-to-end encryption for calendar events Free plan includes recurring events and invitations Booking pages, sharing, and Proton Meet links
Cons	Paid Calendar access is bundled with Zoho Mail plans The Free plan is positioned for individuals and small teams Calendar capabilities are closely tied to the Zoho ecosystem	External calendar synchronization is one-way Narrower integration set than general-purpose calendars Calendar is bundled with Proton Mail plans
Our verdict	Zoho Calendar is a web-based scheduling application for individuals and teams. It covers event creation, invitations, RSVPs, reminders, recurring events, participant availability, shared calendars, group calendars, resource booking, and… 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

• Zoho Calendar — where it wins

  • Free standalone plan plus $1 annual entry tier
  • Two-way Google and Outlook Calendar synchronization
  • Booking pages, room booking, and video-conferencing integrations

  Where it doesn't

  • Paid Calendar access is bundled with Zoho Mail plans
  • The Free plan is positioned for individuals and small teams
  • Calendar capabilities are closely tied to the Zoho ecosystem

• 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

• Zoho Calendar9.1/10 · Free plan

  A low-cost calendar with booking, sync, room reservations, and broad integrations.

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

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

  Try Proton CalendarFull verdict →