CalendarBridge vs OneCal

CalendarBridge

• People who need work, personal and client calendars to block each other
• Organizations syncing calendars across Microsoft 365 and Google tenants
• Consultants and fractional executives working inside several client accounts

OneCal

• People whose work and personal calendars keep producing double bookings
• Consultants and freelancers holding calendars from several clients
• Teams that want calendar sync and booking links in one subscription

CalendarBridge

• The pricing pages list no free plan, and the trial lasts 7 days.
• The AI Scheduling Assistant is not part of Basic, and a custom email domain for the assistant needs Pro.
• Basic allows 2 sync connections, enough for one pair of calendars synced both ways; three calendars synced to each other need 6.
• Real-time syncing is stated for Google and Outlook events; the help center says syncing from iCloud or .ics calendars runs every 5 to 10 minutes.

OneCal

• There is no free plan. When the 14-day trial ends, syncs are paused, cloned events are removed and booking links are disabled until a plan is bought.
• Starter connects 2 calendars per user and Essential 5. Removing OneCal branding from booking pages and dedicated support need Premium.
• In the mobile apps, calendar syncs are view-only and booking links cannot be created or edited; that setup is done in the web app.
• The macOS app on the plan table is the iPhone and iPad app, which the App Store marks as designed for iPad and limits to Macs with an M1 chip or later.

CalendarBridge

Real-time calendar syncing

When an event is created or changed on one calendar, a matching event is created or updated on the others. The pricing page says Google and Outlook events typically update in under a minute.

Control over what is copied

Sync every detail, only a busy block, or something in between. Events can be excluded by color or category, and copies can carry an identifier or a color that shows their source.

Scheduling pages

Every plan includes up to 10 booking pages that check availability across connected calendars, with buffers, daily limits and minimum notice. Stripe can be connected to take payment at booking.

Unified calendar

View and edit events from all connected calendars in one place on the web, iPhone and Android. The number of calendars shown at once is 4, 12 or 24 depending on the plan.

AI Scheduling Assistant

On Premium and Pro, you CC or forward an email thread to the assistant; it proposes times from your availability, follows rules written in plain English and books the meeting.

Group licensing and MCP server

Group accounts put 2 or more users on one bill and can mix user licenses with admin-managed sync licenses. An MCP server lets agents such as Claude, ChatGPT or Cursor manage events and syncs.

OneCal

Real-time calendar sync

Copies events between Google Calendar, Outlook, iCloud and CalDAV calendars, one-way or multi-way, so each calendar shows the time as taken. Every plan allows unlimited sync configurations.

Privacy controls for synced events

Choose which details are copied, such as titles, descriptions, participants, locations and meeting links. Clones can be marked private, and events can be excluded by color or category.

Scheduling links

Unlimited one-on-one and collective booking links with buffers, minimum notice, custom questions, manual confirmation, workflows and embedding. Availability is read from all connected calendars.

Unified calendar view

One interface for every connected calendar: create, edit and delete events, RSVP to invites, join calls, hide the clones made by sync and see when teammates are free.

AI Assistant and MCP server

A built-in chat answers questions about your schedule and proposes changes to events, syncs and booking links, each applied only after you confirm. An MCP server connects Claude, ChatGPT or other MCP clients.

Team administration

The plan table lists OIDC/SAML SSO, SCIM directory sync, audit logs, admin-managed accounts and a user provisioning API on every tier. The docs say several of these are enabled on request.

CalendarBridge

• Basic$4

  per user / month, billed yearly ($48)

  2 sync connections, 10 scheduling pages and the unified calendar for up to 4 calendars. No AI assistant. $5 billed monthly.

• Premium$8

  per user / month, billed yearly ($96)

  20 sync connections, the AI Scheduling Assistant, a 12-calendar unified view and a HIPAA BAA. $10 billed monthly.

• Pro$32

  per user / month, billed yearly ($384)

  56 sync connections, a 24-calendar unified view and a custom email domain for the AI assistant. $40 billed monthly.

• Sync Licenses$3.20

  per connection / month, billed annually; starting price

  For group accounts: an admin creates and manages sync connections centrally, with no end-user setup. Starts at $4 billed monthly.

OneCal

• Starter$5

  per user / month, billed annually ($60)

  Up to 2 connected calendars per user, with unlimited calendar syncs and booking links. $6 per user when billed monthly.

• Essential$10

  per user / month, billed annually ($120)

  Up to 5 connected calendars per user, with the same sync, booking and calendar features. $12 per user when billed monthly.

• Premium$25

  per user / month, billed annually ($300)

  Up to 50 connected calendars per user, removal of OneCal branding, dedicated support and onboarding help. $30 billed monthly.

CalendarBridge

• Annual discount

  20% off with yearly billing

  The pricing page marks yearly billing as 20% off: Basic is $48 a year against $5 a month, Premium $96 against $10 and Pro $384 against $40.

OneCal

• Annual discount

  2 months free with annual billing

  The pricing FAQ and billing docs say yearly billing gives 2 months free: $60, $120 or $300 per user a year against $6, $12 or $30 a month. The page's toggle labels this 20% off.

• Nonprofit

  Discount for nonprofits and open-source groups

  The pricing FAQ says OneCal provides a discount to non-profit and open-source organizations. It does not state the amount.