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OneCal

Sync your calendars, avoid scheduling conflicts·onecal.io

OneCal is a calendar synchronization and scheduling platform that integrates with Google Calendar, Outlook, and iCloud Calendar, enabling users to sync multiple calendars in real time, manage them through a unified interface, and share scheduling links to simplify booking. It offers real-time multi-way sync, privacy controls over what event data is shared, and team scheduling features such as collective booking links.

What it's for

Syncing multiple Google, Outlook, and iCloud calendars to avoid double-bookingSharing individual or collective scheduling links for meetingsManaging personal and work calendars from a unified calendar viewSyncing calendars across different organizations or tenantsTeam scheduling and availability management

Features 19

Add identifier to cloned events
Booking workflows and custom confirmation messages
Choose which event details sync (title, description, participants, location, conference data)
Color-code synced events
Custom availability schedules and buffer times
Embeddable booking links
Exclude events from syncing by color or RSVP response
MCP Server for AI assistant integration
Minimum notice period and limit on future bookings
Mobile apps for iOS and Android, and a macOS app
OIDC/SAML SSO and SCIM Directory Sync
One-way and multi-way calendar sync
Private event controls
Real-time calendar sync across Google Calendar, Outlook, and iCloud Calendar
Unified calendar view to create, edit, delete events, join meetings, and RSVP
Unlimited one-on-one and collective scheduling links
Unlimited sync configurations between calendars
Unlimited synced events
User Provisioning API

At a glance

free trialAPI

TypeWeb app

DeploymentCloud

PlatformsWeb, iOS, Android, macOS

Forexecutives, managers, freelancers, consultants, small teams, organizations

CompanyOneCal

Integrations

Google CalendarOutlookiCloud CalendarZoomMicrosoft TeamsGoogle MeetZapierMCP Server

Complianceself-reported

GDPRSOC 2

Resources

Docs

Pricing

Prices are shown per user per month when billed annually (e.g. Starter $5/user/month billed annually as $60/year); a separate monthly billing option exists via a toggle but no distinct monthly figure is shown. All prices stated in USD. All plans include a 14-day free trial with no credit card required.

Starter$5/user/mo · billed annually

Does not include removing OneCal branding or dedicated support/onboarding assistance per comparison table.

2 calendars per user

Essential$10/user/mo · billed annually

Marked 'Most popular'; does not include removing OneCal branding or dedicated support/onboarding assistance per comparison table.

5 calendars per user

Premium$25/user/mo · billed annually

Targeted at large teams and power users.

50 calendars per user

20% off / 2 months free when billed annually