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Tool comparison

Kalender Sync vs. Calendar Family – how far does a free sync go?

Calendar Family does exactly one thing and charges nothing for it: keeping Google, Microsoft and iCloud calendars in sync – for Google and Microsoft usually within about a minute. For many everyday scenarios, that's hard to beat. We won't make it easy on ourselves: here's an honest look at where Calendar Family is enough – and where a specialised tool like Kalender Sync makes the difference.

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Background

What can Calendar Family do?

Calendar Family (calendarfamily.com), operated by Zoom Buzz Limited, syncs events between Google, Microsoft and Apple iCloud calendars for free – in both directions if you like. Per connection you choose whether full events (titles, times, locations, descriptions) or free/busy only are transferred. Google and Microsoft report changes immediately, so according to the provider they usually arrive within about a minute; iCloud offers no such notification and is checked every 15 minutes. On privacy, the website promises that event data is only accessed temporarily during synchronisation and not retained; the privacy policy names DigitalOcean as host, without a region. The target audience is freelancers, small teams, clubs, churches and families – deliberately kept simple.

Where Calendar Family is strong

Free – no strings attached
For syncing between Google, Microsoft and iCloud, Calendar Family simply charges nothing. If you want to connect exactly these providers and have no further requirements, you get a working tool at zero cost.
Fast – with a choice between details and free/busy
According to the provider, changes from Google and Microsoft usually arrive within about a minute; iCloud is checked every 15 minutes. Per connection you decide whether full events or free/busy only are transferred – for the classic „work calendar as busy in the family calendar" case, that's all you need.
A data-minimal approach
By its own account, event data is only processed temporarily during the sync and not retained. That's a respectable way to handle calendar data – especially for a free tool.

Where Kalender Sync wins

Tap a point to see the reasoning.

  • Three visibility levels instead of two

    Calendar Family offers full events or free/busy only. Kalender Sync adds „title + time" in between – without location and description – plus, from Basic, a custom display name for blocked slots. That way you see on the other side what's coming up, without details wandering unfiltered into the company tenant.

  • 10 provider types instead of three

    Calendar Family connects Google, Microsoft and Apple iCloud. Kalender Sync additionally connects GMX, WEB.DE, mailbox.org, Posteo, STRATO, Infomaniak kSuite and iCal feeds. If there's a German mail provider or a club feed in your mix, you need the breadth.

  • GMX & WEB.DE connected directly

    As the only tool in this comparison, Kalender Sync comes with ready-made connections for the German consumer providers GMX and WEB.DE. Especially for families and private users in Germany, the second calendar often lives exactly there – not at Google or Microsoft.

  • Genuine live-sharing into other calendars

    Calendar Family syncs the calendars you've connected yourself. Kalender Sync can additionally embed your availability live into another person's calendar by invitation – partner, assistant, client. No ICS subscription, no import: accept once, and from then on everything stays synced automatically, as a true two-way sync.

  • A German contractual partner with a DPA

    Kalender Sync is run by PPJ Venture Labs UG (haftungsbeschränkt) in Munich, hosts GDPR- and BDSG-compliant at Hetzner in Nuremberg and offers a DPA (included on every plan for business use) plus German-language support. For Calendar Family, no DPA could be found, and the hosting region at DigitalOcean isn't named. Once your calendar counts for business, that's the difference.

  • With us, you also start permanently free

    Switching is risk-free: one one-way synchronisation in real time is permanently free with Kalender Sync – no trial expiry, no credit card. Bidirectional syncs, syncing your own calendars and more providers start with Basic at €5/month; Professional is €12/month – with a 7-day Professional trial without a credit card.

When should you pick which?

Calendar Family is the right choice if:

  • You want to connect Google, Microsoft and iCloud for free.
  • A choice between full details and plain free/busy is enough for you.
  • It absolutely has to be free and you can do without a DPA and a German contractual partner.
  • It's about purely private calendars with no compliance requirements.

Kalender Sync is the right choice if:

  • You want to control per sync what arrives: „busy only", „title + time" or full details.
  • You want to share your availability live into other people's calendars – not just sync your own accounts.
  • Your calendar counts for business and you want German-language support, a DPA and hosting at Hetzner in Nuremberg.
  • You want to start free but grow when needed – Free forever, Basic €5, Professional €12/month.
  • You want the broadest provider coverage in this comparison: 10 provider types – Google, Microsoft Outlook/M365, Apple iCloud, GMX, WEB.DE, mailbox.org, Posteo, STRATO, Infomaniak kSuite and iCal feeds. Kalender Sync is the only tool in this comparison with ready-made connections for the German providers GMX & WEB.DE – no server address to type in.
Try free for 7 days

Ready for calendar sync that grows with you?

Start permanently free and connect your calendars in a few clicks – GDPR-compliant, hosted in Germany, with three visibility levels per sync.

Try free for 7 days

Currently supported providers

GoogleMicrosoftApple iCloudKKSuiteGMXWEB.DEmailbox.orgiCal-Feeds