Compare Calendar Sync Tools

See how calMator compares to other calendar synchronization services

Feature calMator OneCal Clockwise Reclaim AI
Real-time sync Google & Outlook Google & Outlook Google & Outlook Google & Outlook
CalDAV support Any provider
Self-hosted calendars
Event content stored Never Claims no Yes (for AI) Yes (for AI)
Travel time blocks
Scheduling links
Multi-way sync
Starting price ~$5/user/mo $5/user/mo Free (limited) Free (limited)

What makes calMator different

Privacy by design

We never store event titles, descriptions, or locations. Event content is processed in memory and immediately discarded.

Broad provider support

Any calendar that speaks CalDAV — Google, iCloud, Fastmail, Nextcloud, Synology, Radicale, and more.

Travel time automation

Automatically block travel time before events with physical locations. Show as busy during commutes.

Detailed comparisons

vs OneCal

OneCal is a popular calendar sync tool with scheduling link features.

Where calMator excels

  • + CalDAV support (Fastmail, Nextcloud, self-hosted)
  • + Never stores event content
  • + Built-in travel time automation

OneCal advantages

  • + Built-in scheduling links
  • + Unified calendar view

vs Clockwise

Clockwise uses AI to optimize your calendar and protect focus time.

Where calMator excels

  • + CalDAV support (Fastmail, Nextcloud, self-hosted)
  • + Never stores or analyzes event content
  • + Simple, predictable sync behavior

Clockwise advantages

  • + AI-powered focus time protection
  • + Automatic meeting rescheduling
  • + Team-wide calendar optimization

vs Reclaim AI

Reclaim AI uses AI to automatically schedule tasks and protect habits.

Where calMator excels

  • + Focused on sync, not AI scheduling
  • + Never stores or analyzes event content
  • + Simpler, more predictable behavior

Reclaim advantages

  • + AI-powered task scheduling
  • + Habit protection features
  • + Smart 1:1 meeting scheduling

No scheduling links?

We intentionally don't build scheduling links. There are excellent dedicated tools for that:

These tools integrate well with any calendar, including ones synced by calMator.

Not sure which tool is right for you?

Join our Discord and ask — we're happy to help, even if calMator isn't the best fit.

Ready to try calMator?

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