Pre-Production Environment. This platform is not for production use. It is under active development and may contain bugs, incomplete features, or unexpected behaviour.
Zero Friction. Enterprise-Grade.
Real-time synchronization for Microsoft 365 and Google Workspace — across accounts, organizations, and time zones. Automatic. Secure. Effortless.
No credit card required · 14-day free trial included
Powerful features that scale from solo users to enterprise teams.
Changes propagate instantly using Microsoft Graph webhooks and Google Calendar polling. Both platforms, one seamless experience.
OAuth 2.0 per-account authentication, AES-256 encryption, and zero-knowledge design — your event content is never stored.
Create sync groups of 2–20 calendars. Every new calendar added automatically pairs with all existing group members.
Full history of synced events per calendar pair — with status, timestamps, and error details for every operation.
Color-code and label events by origin calendar. Recipients always know exactly which calendar an event comes from.
Configure one-way or two-way synchronization per calendar pair. Control exactly what flows where and when.
All plans include a 14-day free trial. No credit card required to start.
Perfect for individuals
For power users
For growing teams
All features unlocked
Join thousands of teams already using CalSyncPro to stay perfectly in sync.
14-day free trial · No credit card required
We never see or store your Microsoft or Google password. Authentication uses OAuth 2.0 — the same standard used by major enterprise software.
Choose Microsoft 365 or Google from the Sign In menu. No separate CalSyncPro password to create or remember.
You're redirected to Microsoft or Google's own secure login page. CalSyncPro never sees your credentials — only the permissions you grant.
You return to CalSyncPro with a short-lived access token — not your password. Revoke access at any time from your Microsoft or Google account settings.
CalSyncPro is registered as a verified application on Microsoft Azure AD and Google Cloud Console. Only the calendar permissions you explicitly approve are requested — no access to email, contacts, or other data.