OnlyBusy
OnlyBusy vs CalendarBridge
Last updated 3 October 2026
CalendarBridge syncs events between accounts. Its pricing page says you can sync all details, just busy, or somewhere in between. OnlyBusy writes one thing: a private Busy event with the label you chose, and it does not store the source title.
At a glance
| Comparison | Other approach | OnlyBusy |
|---|---|---|
| What it is for | Sync connections between calendars, plus scheduling pages and a unified calendar. | A private Busy event on each calendar you connect. |
| Scheduling Assistant | A synced event on the calendar can count. Their page says you choose how much detail that event carries. | The event is marked Busy and private and carries only the label you set. |
| Event details | You can sync all details, just busy, or somewhere in between. | Title, guests, notes, and location stay on the source calendar. OnlyBusy does not store the title. |
| How you connect | Sync connections between the accounts you add. Group plans also offer admin-managed connections. | Personal sign-in for Google Calendar and Microsoft 365. No tenant-wide admin consent. |
What they are for
CalendarBridge copies events between calendars. As of 3 October 2026, the individual pricing page lists Basic with 2 sync connections, Premium with 20, and Pro with 56, and up to 10 scheduling pages on each.
That is a full sync product. You pick it when the other calendar should hold more than a Busy label, or when you want their unified calendar and scheduling pages.
What OnlyBusy writes
OnlyBusy writes a private event and tags it so the block is never mirrored back. Re-syncs update that same event instead of stacking duplicates.
Disconnect a calendar and OnlyBusy removes the blocks it created, stops listening, and deletes the stored tokens for that account.
Who should stay with them
Stay with CalendarBridge when you want a copy of the event, with the detail level you configure, or when you want their scheduling pages and unified calendar.
Their pricing page says real-time sync for Google and Outlook events typically updates in under a minute.
Who should add OnlyBusy
Add OnlyBusy when the other calendar should learn one fact: this hour is taken. The meeting itself stays where it was booked.
If a tenant blocks user consent entirely, that calendar cannot be connected until the admin allows it. OnlyBusy does not request tenant-wide admin consent.
Price
As of 3 October 2026, CalendarBridge's individual pricing page says plans cost $4 to $40 per month depending on the plan and billing frequency. It does not list a free plan on that page.
As of 3 October 2026, OnlyBusy lists Free at $0 with up to 2 calendars and no scheduling links, Standard at $6 a month or $50 a year with up to 4 calendars and 4 scheduling links, and Premium at $12 a month or $99 a year with unlimited calendars and scheduling links. Teams is arranged by email at privacy@onlybusy.com.
Questions
Is OnlyBusy a CalendarBridge alternative?
When you want a private Busy label and nothing else copied. CalendarBridge remains the tool when you want to choose a fuller copy of the event.
Can CalendarBridge sync only busy?
Their individual pricing page says you can sync all details, just busy, or somewhere in between. OnlyBusy always writes the label you set and does not store the source title.
Do I need an admin to connect?
OnlyBusy uses personal sign-in. A tenant that blocks user consent entirely cannot be connected until that admin allows it.