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OneCal

Freemium
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Real-time multi-calendar sync for Google, Outlook, and iCloud that prevents double-booking

Website:https://onecal.io/
Added on:Jul 13, 2026
Monthly Visitors:
91.5K
Social & Email:
calendar syncmulti-calendarreal-time syncscheduling linksGoogle CalendarOutlook Calendar
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OneCal
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Tool Information

What is OneCal?

OneCal is a real-time multi-calendar sync tool that synchronizes multiple Google, Outlook, and iCloud calendars so users avoid scheduling conflicts, share individual or team scheduling links, and manage all calendars from a single interface while preserving privacy.

Core Features

  • Real-Time Calendar Sync

    Automatically detects and syncs calendar changes as they happen across connected calendars, with iCloud updates reflecting within up to 10 minutes.

  • Multi-Way Calendar Syncs

    Supports one-way or multi-way syncs between two or more calendars, including syncing one calendar to multiple destinations with independent configurations.

  • Scheduling Links

    Create and share individual or collective scheduling links for easy appointment and meeting bookings without back-and-forth communication.

  • Unified Calendar Interface

    Manage Outlook, iCloud, and Google calendars from a single mobile-friendly interface to create, update, delete meetings, join calls, and RSVP.

  • Privacy-Focused Sync

    Customizable event replication that can exclude titles or control detail level; only necessary data is stored and no calendar event data is stored, analyzed, or sold.

  • Team Plans

    Organization-wide plans enabling teams to sync calendars collectively.

  • Fully Configurable Sync

    Tools to precisely configure what is synced between calendars, without modifying existing events; generated clones can be deleted when a sync is removed.

Use Cases

  • #1

    Blocking personal events in work calendar

    Block time for personal events on a work calendar while keeping personal details private and signaling unavailability to colleagues.

  • #2

    Syncing multiple clients' calendars into main work calendar

    Aggregate client calendars into a primary work calendar for a complete schedule view, automatic new-event syncing, and avoidance of double bookings.

  • #3

    Blocking time in clients' calendars for internal meetings

    Reserve time on client calendars for internal team meetings without sharing details with clients, while preventing conflicts.

  • #4

    Aggregate all calendars into a single calendar

    Sync events from multiple providers into one calendar for a unified view of the entire schedule.

Best for:Professionals managing multiple personal and work calendarsConsultants and freelancers working with multiple clientsTeams and organizations needing shared calendar visibilityExecutive assistants and operations staff coordinating schedules

Pricing Plans

Start for free with no credit card required; team plans available for organizations.

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Frequently Asked Questions

What calendar providers does OneCal support?
OneCal supports Google Calendar, Microsoft Outlook Calendar, and Apple iCloud Calendar.
How does real-time calendar sync work with OneCal?
Calendars sync automatically in real time as original events change or new events are added. iCloud Calendar updates can take up to 10 minutes to reflect on other calendars.
Is OneCal free to start using?
Yes. OneCal uses a freemium model. You can start for free with no credit card required, and team plans are available for organizations.
How does OneCal handle privacy when syncing calendars?
OneCal offers privacy-focused sync with customizable event replication that can exclude titles or control detail level. It does not store any calendar event data, analyze event data, or sell or monetize any data.
Can teams use OneCal for organization-wide calendar syncing?
Yes. OneCal provides team plans that enable organizations to sync calendars collectively.
What can I do with OneCal’s unified calendar interface?
You can manage Outlook, iCloud, and Google calendars from a single mobile-friendly interface to create, update, and delete meetings, join conference calls, and RSVP to events.

OneCal Contact & Social Media

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Tool Information

Pricing ModelFreemium
CategoryProductivity
Tags
calendar syncmulti-calendarreal-time syncscheduling linksGoogle CalendarOutlook Calendar
LanguageEnglish
Last UpdatedJul 16, 2026
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