Best Site for Online Calendar
Summary
The best online calendar depends on your priorities. Google Calendar dominates for sheer integration breadth. Proton Calendar is the underrated end-to-end-encrypted option from the Proton ecosystem that listicles consistently ignore. Notion Calendar (formerly Cron) raised the bar on keyboard-driven UX after Notion acquired it. Fantastical is the polish leader for Apple users. Apple Calendar quietly works fine for most casual users. Skiff Calendar shut down with the rest of Skiff in 2024 — older listicles still recommend it.
Top 5 at a glance
| # | Site | Best for | Price |
|---|---|---|---|
| 1 | Google Calendar | Broadest integration with everything | Free with Google account |
| 2 | Proton Calendar | End-to-end encrypted calendar from a privacy-aligned team | Free tier; included with paid Proton plans |
| 3 | Notion Calendar (formerly Cron) | Keyboard-driven UX with strong meeting-link flows | Free |
| 4 | Fantastical | Polished calendar for Apple users | Subscription required for full features |
| 5 | Apple Calendar | Default built-in option for Apple users | Free, included with Apple devices |
Detailed rankings
Google Calendar
Broadest integration with everything
The default by inertia and ecosystem effect. Solid product; the privacy posture is the deciding factor for users who weight it.
Pros
- Largest integration ecosystem — every other tool integrates with it
- Strong shared-calendar features for teams and families
- Cross-platform with native mobile apps
- Free with unlimited events
Cons
- Privacy posture follows Google's broader data practices
- Default settings share more than most users realize
- Account ties you to the Google ecosystem
Price: Free with Google account
Sources: calendar.google.com
Proton Calendar
End-to-end encrypted calendar from a privacy-aligned team
The right pick when you specifically want an encrypted calendar. Underrated by mainstream listicles which usually rank by features rather than privacy.
Pros
- End-to-end encryption of event details — Proton cannot read your schedule
- Same Proton ecosystem as Mail, VPN, Drive, Pass
- Free tier covers personal use
- Swiss jurisdiction
Cons
- Integration ecosystem smaller than Google's
- Sharing with non-Proton users requires careful link flows
- Mobile apps less polished than Google Calendar
Price: Free tier; included with paid Proton plans
Sources: proton.me
Notion Calendar (formerly Cron)
Keyboard-driven UX with strong meeting-link flows
The right pick for keyboard-driven power users with Google Calendar accounts. The post-acquisition direction is still developing.
Pros
- Best-in-class keyboard shortcuts and command palette
- Slick meeting-link sharing flows
- Acquired by Notion and rebranded — integration with Notion projects continuing
- Multi-account support for personal plus work
Cons
- Limited to Google Calendar accounts at the time of writing
- Notion's broader cloud-only design
- Mac and web only — no native Windows or Linux apps
Price: Free
Sources: www.notion.so
Fantastical
Polished calendar for Apple users
The right pick for Apple users who specifically want the polish and accept the subscription model.
Pros
- Best polish for Apple ecosystem users
- Strong natural-language event creation
- Combines multiple calendar accounts cleanly
- Active development with frequent updates
Cons
- Subscription model — was a one-time purchase historically, change frustrated some long-time users
- Apple ecosystem only
- Premium features locked behind paid tier
Price: Subscription required for full features
Sources: flexibits.com
Apple Calendar
Default built-in option for Apple users
Adequate for casual personal use on Apple devices. Most users either stay here or migrate to Google Calendar for sharing.
Pros
- Free, no signup beyond Apple ID
- Syncs across Apple devices via iCloud
- Integrates with Apple's broader ecosystem
Cons
- Apple ecosystem only
- Less feature-rich than Google Calendar or Fantastical
- Limited customization
Price: Free, included with Apple devices
Sources: www.apple.com
How we chose
- Integration with email, video conferencing, and the apps you actually use.
- Privacy — encrypted versus provider-readable.
- Multi-account support for personal plus work calendars.
- Keyboard-driven UX for power users.
- Cross-platform sync reliability.
- Free tier completeness.
Frequently asked questions
Why is Proton Calendar rated above Notion Calendar?
End-to-end encryption is the structural advantage. Notion Calendar's UX is excellent, but the events are stored in Google's infrastructure. Proton's encryption means the provider cannot read your schedule. If privacy isn't a priority, Notion Calendar's UX may matter more to you.
What happened to Cron?
Cron was acquired by Notion in 2022 and rebranded as Notion Calendar. The product continues to develop. Older listicles recommending 'Cron' should be read as recommending Notion Calendar.
Is iCloud Calendar private?
iCloud encrypts calendar data in transit and at rest. With Advanced Data Protection enabled, calendar data becomes end-to-end encrypted. Default iCloud is not E2E for calendars — Apple can access events under legal process. Enable Advanced Data Protection if privacy matters.
Can I share my calendar with someone on a different platform?
Yes. All major calendars support exporting an iCalendar feed URL that others can subscribe to. Cross-platform invites work via standard iCal attachments. Google Calendar's sharing inside Google works most smoothly; cross-platform sharing requires more setup.
What about Skiff Calendar?
Skiff was acquired by Notion in 2024 and all Skiff services including the Calendar were shut down. Older listicles still recommend Skiff Calendar. The Notion acquisition was the end of the Skiff product line.