Calendar Sync Tool Comparisons

How we compare calendar sync tools

Most calendar sync comparisons online are affiliate-driven roundups that gloss over the things that matter. Our comparisons focus on five axes that actually decide whether a tool will work for you:

• Sync architecture — webhook-driven for Google/Outlook changes vs scheduled polling for providers such as CalDAV and iCal feeds. This is the single biggest determinant of how the tool feels in practice.
• Pricing that fits how you sync: individual plans scale by the calendars and accounts you connect, not per person, so a busy solo user isn't billed like a team. Teams that want everyone on one bill can use the Team plan.
• Free-tier reality — what you can actually do without paying, including supported providers and per-day sync limits.
• Default visibility — does the tool show event titles by default, or just "Busy" blocks? This matters for syncing personal calendars to work calendars.
• How much you can shape the sync — beyond direction, what can you actually change? SYNCDATE filters on your RSVP, on a word in the title, on all-day or free events, and on the days and hours you choose; on Pro, every calendar inside one sync can carry its own title, colour, and default visibility. Where a competitor's own documentation states their equivalent, the individual comparison pages below say so — and where it doesn't, we leave the row out rather than guess.

Calendar sync tools at a glance

Rival prices come from each vendor's own pricing page and may have changed since publish — see the linked comparison below for plan details.