Best tools
If you have a work calendar, a client calendar and a personal one, a calendar sync tool keeps them from double-booking you. They work in two different ways, they support different calendars, and prices run from free to per-seat plans. Here are seven options, what each is best for, and who should skip it. Meetingpad's founder wrote this list, and Meetingpad is on it, so we've stuck to facts from each company's own website.
Sync tools copy each meeting into your other calendars, usually with an option to hide the details. Blocking tools add a busy block instead, so the other calendar shows you're busy without the meeting itself. Both stop double bookings; blocking keeps meeting details where they belong.
Meetingpad blocks time across every Google and Microsoft calendar you connect for free, with booking links that check all of them. It runs on Mac, with a Windows beta, and works alongside the calendar app you already use.
Skip it if you need iCloud calendars, a phone app or a team plan.
Notion Calendar can auto-block busy slots across all your calendars and offers scheduling links that avoid conflicts. It replaces your calendar app rather than working alongside it.
Skip it if you'd rather keep the calendar app you have.
Reclaim's calendar sync sits inside a broader AI assistant that also schedules tasks, habits and focus time. The free plan covers one sync.
Skip it if you only want sync and have more than two calendars.
OneCal copies events between calendars in real time, includes scheduling links on every plan, and has apps for iPhone, Android and Mac.
Skip it if you want to stay free.
CalendarBridge mirrors events between your calendars and adds a unified view, booking pages and an AI assistant. It offers organization accounts with central billing.
Its website refuses automated checks, so we couldn't confirm prices; follow the link to see them.
SyncThemCalendars does one thing: it copies events between calendars, as a web service with nothing to install.
Skip it if you also want booking links; we found none on its website.
You can share a calendar with your other Google account and choose See only free/busy (hide details). Our guide to combining Google calendars has the steps.
Skip it if a work or client account won't let you share outside the organization.
For Google and Microsoft calendars, Meetingpad blocks time across every calendar you connect for free. Notion Calendar is free if you want a new calendar app, and Reclaim's free plan covers one sync.
Syncing copies your meetings into your other calendars. Blocking adds a busy block instead, so the other calendar shows you're busy without the meeting's details.
Not always. Google Calendar can share a calendar with your other account as free/busy only, if your accounts allow it.
Meetingpad's founder wrote it. Every other tool's details come from that company's own website and are linked below, so you can check them.
Connect every Google and Microsoft calendar for free. A meeting on one blocks the time on the others, and your booking links only offer times you're free.
