Pre-Production Environment. This platform is not for production use. It is under active development and may contain bugs, incomplete features, or unexpected behaviour.
Real-time calendar sync built on Microsoft Graph webhooks and Azure. Two topologies that scale from a single pair to enterprise teams of 20.
Zero-knowledge · AES-256-GCM encryption · T+180 day rolling window · SYNC-FB anti-loop
When someone books, moves, or cancels a meeting in any connected calendar, CalSyncPro reacts in under a second.
A user creates, updates or deletes an event in Microsoft 365 or Google Calendar.
Microsoft Graph or Google Push posts an HTTP notification to our webhook endpoint.
The notification is enqueued for reliable, asynchronous processing with retries.
The sync processor validates rules, filters out SYNC-FB echoes, and resolves conflicts.
A zero-knowledge time block (no subject, body, or attendees) lands in every paired calendar.
CalSyncPro supports two fundamental sync patterns. Most setups use one; some combine both.
One calendar sits at the center. Every other calendar keeps it in sync. Events flow from the primary out to all peers, and from any peer back to the primary.
Executive assistants managing a principal's availability · shared mailboxes · master company calendar · solo users consolidating several personal accounts.
Every calendar syncs with every other calendar. No single point of failure. Event created anywhere propagates to every node simultaneously.
Co-founders sharing availability · small project teams · family calendars · any group where everyone needs to see everyone else's schedule.
Your plan's pair limit determines the largest group you can connect. Star scales linearly; mesh grows with the square of the team size.
Star and mesh topologies visualised for 1, 4, 10 and 20 pairs. Cyan pulses represent events in flight across the webhook → queue → clone pipeline.
Start free for 14 days. No credit card. Cancel anytime.