Guide

Reclaim.ai alternatives for calendar sync (2026)

People look up Reclaim.ai alternatives when they used Reclaim to put personal busy time onto a work Google Calendar — or the other way around — and want something simpler or cheaper.

Reclaim is an AI calendar. Calendar Sync is one feature of that product. It writes event copies onto another calendar so coworkers see you as busy. Reclaim also ships Habits, Focus Time, Tasks, Smart Meetings, and scheduling links.

If you only need the sync part between Google calendars, a single-purpose tool is a different job. Resync writes hold events titled Busy, with no source titles or attendees. $1.50/month or $9/year after a 30-day free trial, no credit card required.

This is not the Clockwise alternatives for calendar syncguide. That page is about replacing Clockwise after it shut down. This page is about Reclaim's Calendar Sync versus tools that only write busy holds.

What Reclaim does besides Calendar Sync

Reclaim's own Calendar Sync page describes an AI scheduler that also syncs calendars. The sync feature:

Takes events from a source calendar and creates synced copies on a destination calendar.
Works with Google Calendar and Outlook Calendar. iCloud only if you first share it to Google; Reclaim notes delays.
Lets each sync policy set privacy. Busy for All shows only Busy with no details.
Needs two policies, one in each direction, for bidirectional blocking.

The rest of Reclaim — Habits, Focus Time, Tasks, Smart Meetings, scheduling links — is a planner. Resync does not do that work. If you want the planner, keep Reclaim. If you only used Calendar Sync to block work and personal Google Calendars, the options below compare that job.

Reclaim pages linked below checked Oct 31, 2026.

Built-in option: share or subscribe in Google Calendar

Google's free path is still to share a calendar from account A to account B, or copy the secret address in iCal format and Add by URL. B sees A under Other calendars. You can grant See only free/busy (hide details).

What sharing does not do

It is a view. A's events stay on A's calendar. They do not become events on B's calendar.
Other people booking B do not automatically see A's busy time. B's booking page only checks extra calendars if B's owner turns that on and selects them. Checking secondary calendars needs an eligible Workspace or Google One plan.
Work or school admins can limit or block external sharing. Google Calendar Help does not publish a refresh interval you can set for URL subscriptions.

How Resync's Busy holds work

Resync does not share calendars with each other. It reads when you are busy on Google calendars you mark as sources and writes hold events onto Google calendars you mark as mirrors.

Holds are titled Busy. Description, location, attendees, and conference data are left empty, so source meeting details stay on the source calendar.
When you mark calendars as both source and mirror, a booking on either calendar becomes a Busy hold on the others. That is two-way blocking between those Google calendars.
If a source event moves, Resync updates the hold. If the event is cancelled, marked free, declined, or is a working-location event, Resync does not keep a hold.
Resync looks 90 days ahead when it reads source events. Holds it writes are marked so they are not copied again.
If you delete or edit a hold, Resync records that and does not recreate it for the same source event on that mirror.
Read-only calendars cannot be mirrors. Resync currently syncs Google calendars only.

Use sharing when you only need to see the other calendar. Use Resync when the Google calendars that get booked should treat the other account's busy time as busy. Use Reclaim, OneCal, Morgen, or CalendarBridge when you also need Outlook, iCloud, or an AI planner.

Compare the options for the sync job

Facts below were checked on each vendor's own site on Oct 31, 2026. If a number was not on the page, it is left out.

Compare	Google built-in	Reclaim	OneCal	Morgen	CalendarBridge	Resync
Blocks time for others	No, not by itself. Share and iCal URL land under Other calendars. Booking pages check extra calendars only if that account's owner turns that on.	Yes. Calendar Sync writes event copies onto the destination calendar.	Yes. Clone events block time on the target calendar.	Yes. Calendar Propagation writes private events onto the destination calendar.	Yes. Each sync connection writes an event copy onto the destination calendar.	Yes. Resync writes Busy holds onto calendars you mark as mirrors.
Calendars it writes to	Google Calendar only. The overlay is a view, not a written event.	Google Calendar and Outlook Calendar. iCloud only if you first share it to Google; Reclaim notes delays.	Google, Outlook, iCloud, and CalDAV such as Fastmail, Nextcloud, or Zoho.	Google, Outlook, iCloud, and Fastmail.	Google and Outlook. iCloud and ICS URL feeds can be sources.	Google Calendar only.
What others see	Only the person you shared with. See only free/busy hides names. See event details shows titles, times, places, and descriptions.	Configurable per sync policy. Busy for All shows only Busy with no details.	Configurable. You can hide titles and show a custom message.	Morgen's FAQ says default Busy with no details. The propagation guide says Private Event (from Morgen).	Configurable. With every detail toggle off, copies are titled busy with an empty body.	Hold titled Busy. Description, location, attendees, and conference data stay empty.
How it updates	Sharing is Calendar sharing, not a polled feed. Google does not publish a URL-subscription refresh interval. People commonly report hours, not minutes.	Reclaim's Calendar Sync page says updates happen in real time as source events change.	Real-time for Google and Outlook. About 10 minutes for iCloud.	Daily at 6:00 pm for the next 14 days. You can run the workflow manually.	Real-time for Google and Outlook sources, typically within a minute or two. iCloud and ICS URL sources every 5 to 10 minutes.	Resync watches source calendars and updates or removes holds when those events change, move, or are cancelled.
How far ahead	The shared or subscribed calendar includes the events on it. That is not a separate sync window.	Not stated on the Reclaim Calendar Sync pages we checked. The pricing page's 1 / 8 / 12 week range is for automated scheduling, not Calendar Sync.	Up to 1 year for Google and iCloud. Up to 3 months for Outlook.	The upcoming 14 days.	The individual pricing page says unlimited synced events / all future events. No separate window is published.	90 days from now.
What else it does	Free and built into Google Calendar. No AI scheduling.	AI scheduling agents including Habits, Focus Time, Tasks, and Smart Meetings, plus scheduling links.	Booking links and a unified calendar view.	AI daily planner, tasks, travel and buffer time, and scheduling links.	Unified calendar view and booking pages. Premium and Pro add an AI assistant.	Busy-hold sync only. No Focus Time, meeting moves, or scheduling links.
Price	Free.	Lite is free forever with 1 Calendar Sync. Starter is $10/seat/month billed yearly or $12 monthly, with 3 Calendar Syncs. Business is $15 yearly or $18 monthly, with unlimited Calendar Syncs.	Starter is $5/user/month billed annually ($60/year) for 2 calendars. Essential $10 ($120/year) for 5. Premium $25 ($300/year) for 50. 14-day trial, no credit card. No free plan after the trial.	Pro is $15/month billed yearly or $30 monthly. 14-day trial, no credit card. No free plan on the pricing page we checked.	Basic is $5/month or $4/month billed yearly ($48/year) for 2 sync connections. Premium $10/$8 ($96/year) for 20. Pro $40/$32 ($384/year) for 56. Trial; no credit card required to start.	$1.50/month or $9/year after a 30-day free trial, no credit card required.

Google built-in

Blocks time for others: No, not by itself. Share and iCal URL land under Other calendars. Booking pages check extra calendars only if that account's owner turns that on.
Calendars it writes to: Google Calendar only. The overlay is a view, not a written event.
What others see: Only the person you shared with. See only free/busy hides names. See event details shows titles, times, places, and descriptions.
How it updates: Sharing is Calendar sharing, not a polled feed. Google does not publish a URL-subscription refresh interval. People commonly report hours, not minutes.
How far ahead: The shared or subscribed calendar includes the events on it. That is not a separate sync window.
What else it does: Free and built into Google Calendar. No AI scheduling.
Price: Free.

Reclaim

Blocks time for others: Yes. Calendar Sync writes event copies onto the destination calendar.
Calendars it writes to: Google Calendar and Outlook Calendar. iCloud only if you first share it to Google; Reclaim notes delays.
What others see: Configurable per sync policy. Busy for All shows only Busy with no details.
How it updates: Reclaim's Calendar Sync page says updates happen in real time as source events change.
How far ahead: Not stated on the Reclaim Calendar Sync pages we checked. The pricing page's 1 / 8 / 12 week range is for automated scheduling, not Calendar Sync.
What else it does: AI scheduling agents including Habits, Focus Time, Tasks, and Smart Meetings, plus scheduling links.
Price: Lite is free forever with 1 Calendar Sync. Starter is $10/seat/month billed yearly or $12 monthly, with 3 Calendar Syncs. Business is $15 yearly or $18 monthly, with unlimited Calendar Syncs.

OneCal

Blocks time for others: Yes. Clone events block time on the target calendar.
Calendars it writes to: Google, Outlook, iCloud, and CalDAV such as Fastmail, Nextcloud, or Zoho.
What others see: Configurable. You can hide titles and show a custom message.
How it updates: Real-time for Google and Outlook. About 10 minutes for iCloud.
How far ahead: Up to 1 year for Google and iCloud. Up to 3 months for Outlook.
What else it does: Booking links and a unified calendar view.
Price: Starter is $5/user/month billed annually ($60/year) for 2 calendars. Essential $10 ($120/year) for 5. Premium $25 ($300/year) for 50. 14-day trial, no credit card. No free plan after the trial.

Morgen

Blocks time for others: Yes. Calendar Propagation writes private events onto the destination calendar.
Calendars it writes to: Google, Outlook, iCloud, and Fastmail.
What others see: Morgen's FAQ says default Busy with no details. The propagation guide says Private Event (from Morgen).
How it updates: Daily at 6:00 pm for the next 14 days. You can run the workflow manually.
How far ahead: The upcoming 14 days.
What else it does: AI daily planner, tasks, travel and buffer time, and scheduling links.
Price: Pro is $15/month billed yearly or $30 monthly. 14-day trial, no credit card. No free plan on the pricing page we checked.

CalendarBridge

Blocks time for others: Yes. Each sync connection writes an event copy onto the destination calendar.
Calendars it writes to: Google and Outlook. iCloud and ICS URL feeds can be sources.
What others see: Configurable. With every detail toggle off, copies are titled busy with an empty body.
How it updates: Real-time for Google and Outlook sources, typically within a minute or two. iCloud and ICS URL sources every 5 to 10 minutes.
How far ahead: The individual pricing page says unlimited synced events / all future events. No separate window is published.
What else it does: Unified calendar view and booking pages. Premium and Pro add an AI assistant.
Price: Basic is $5/month or $4/month billed yearly ($48/year) for 2 sync connections. Premium $10/$8 ($96/year) for 20. Pro $40/$32 ($384/year) for 56. Trial; no credit card required to start.

Resync

Blocks time for others: Yes. Resync writes Busy holds onto calendars you mark as mirrors.
Calendars it writes to: Google Calendar only.
What others see: Hold titled Busy. Description, location, attendees, and conference data stay empty.
How it updates: Resync watches source calendars and updates or removes holds when those events change, move, or are cancelled.
How far ahead: 90 days from now.
What else it does: Busy-hold sync only. No Focus Time, meeting moves, or scheduling links.
Price: $1.50/month or $9/year after a 30-day free trial, no credit card required.

Sources, all Reclaim pricing, Reclaim Calendar Sync, Reclaim Calendar Sync overview, Reclaim 2.0 FAQ, Reclaim bidirectional policies, OneCal pricing, OneCal Calendar Sync, OneCal FAQ, OneCal plans and trial, Morgen pricing, Morgen Calendar Propagation, Morgen FAQ, CalendarBridge individual pricing, CalendarBridge billing, CalendarBridge about syncing, and CalendarBridge hide event details. Checked Oct 31, 2026.

Free and open-source options

Google Calendar sharing is the free built-in option. It does not write holds. Reclaim Lite is free forever and includes 1 Calendar Sync, so you can keep Reclaim if one sync policy is enough.

OneCal, Morgen, and CalendarBridge publish trials. None of those pricing pages list a lasting free plan for full sync. Resync is $1.50/month or $9/year after a 30-day free trial, no credit card required.

There is no maintained hosted open-source Reclaim alternative on the vendor pages we checked. Self-hosted GitHub projects exist, but they were not reviewed as products here.

Who each option fits

Google built-in. You only need to see the other Google calendar yourself. Sharing or an iCal URL subscription is free. It is the wrong tool if other people book the second calendar and should treat the first calendar's busy time as busy.
Reclaim. You want the AI scheduler — Habits, Focus Time, Tasks, Smart Meetings, scheduling links — and Calendar Sync onto Google or Outlook is one piece of that. Lite is free with 1 Calendar Sync. Paid plans add more syncs and a longer scheduling range.
OneCal. You need to mix Google, Outlook, iCloud, or CalDAV, and you want to choose how much detail clone events carry. OneCal documents real-time Google and Outlook updates. Plans start at $5/user/month billed annually for 2 calendars. Resync cannot cover those other providers.
Morgen. You want an AI daily planner and can accept Calendar Propagation that runs once a day for the next 14 days. Pro is $15/month billed yearly after a 14-day trial. Use it when a same-day hold is not required.
CalendarBridge. You want a sync-first tool that writes copies onto Google or Outlook, with optional iCloud or ICS URL sources, and you want to turn event details off so copies are titled busy. Basic is $5/month or $4/month billed yearly for 2 sync connections.
Resync. The calendars that get booked are Google calendars, and you want Busy holds with no source titles, attendees, or locations. $1.50/month or $9/year after a 30-day free trial, no credit card required. Resync does not move meetings, create Focus Time, or offer scheduling links.

Set up Resync

Sign in with GoogleOpen Resync and sign in with the Google account you want as your primary account. You land on setup.
Connect another Google accountChoose Connect another Google account and finish Google's permission screen. Resync needs at least two Google accounts before you can start.
Start syncingWhen a second account is connected, setup shows bidirectional mirroring as the intended default: real events on either side become private busy blocks on the other. Choose Start syncing to open the dashboard.
Mark sources and mirrorsIn Sync configuration, turn on Source to read busy time from a calendar and Mirror to receive Busy holds. A calendar can be both. Read-only calendars cannot be mirrors because Resync needs write access to create holds.

FAQ

What is a simpler Reclaim.ai alternative for calendar sync?

Reclaim is an AI scheduler. Calendar Sync is one feature: it writes event copies onto another calendar. If you only need busy blocks between Google calendars, Resync writes holds titled Busy and costs $1.50/month or $9/year after a 30-day free trial, no credit card required. OneCal and CalendarBridge also write copies and add Outlook or iCloud. Google sharing is free, but it is a view, not a hold.

Is there a free Reclaim.ai alternative?

Google Calendar sharing and See only free/busy (hide details) are free. They overlay a calendar; they do not write events onto the calendar other people book. Reclaim Lite is free forever and includes 1 Calendar Sync. Resync is $1.50/month or $9/year after a 30-day free trial, no credit card required.

Is there an open-source Reclaim.ai alternative?

I did not find a maintained hosted open-source product that writes busy holds across Google calendars. The free options that are on vendor pages are Google Calendar sharing and Reclaim Lite (1 Calendar Sync).

Does Reclaim Calendar Sync copy event titles onto the other calendar?

It can. Each sync policy sets privacy. Busy for All shows only Busy with no details. Other settings can show a generic commitment label or event details. Bidirectional blocking is two policies, one in each direction.

When should I keep Reclaim instead of switching?

Keep Reclaim if you want Habits, Focus Time, Tasks, Smart Meetings, or scheduling links, or if you need Calendar Sync onto Outlook. Those are a different product from busy-hold sync. Resync does not do them.

Does Resync sync Outlook or iCloud?

No. Resync is a Google Calendar app. It does not write holds into Outlook or iCloud. If you need those providers, Reclaim documents Google and Outlook Calendar Sync, OneCal documents Google, Outlook, iCloud, and CalDAV, CalendarBridge documents Google, Outlook, iCloud, and ICS URL sources, and Morgen documents Google, Outlook, iCloud, and Fastmail for Calendar Propagation.

What if I delete a Busy hold that Resync created?

Resync records that change and does not recreate a hold for the same source event on that mirror calendar.

How to avoid double booking across Google Calendars

How to sync two Google Calendars from different accounts

Connect the Google calendars you want to keep aligned, then mark sources and mirrors on the dashboard.

Resync will ask Google for permission to:see your list of calendars; see events on the calendars you choose as Sources, to know when you're busy; and create, update and delete events titled "Busy" on calendars you choose as Mirrors. We never store event titles, attendees or locations. Privacy policy