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 Calendar and Outlook in sync, within seconds. For the simplest scenario, 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.

Try free for 14 days See the Calendar Family view

Background

What can Calendar Family do?

Calendar Family (calendarfamily.com), operated by Zoom Buzz Limited, keeps Google Calendar and Microsoft Outlook in sync for free. Synchronisation runs via webhooks and, according to the provider, propagates changes „within seconds" – including titles, times, locations and descriptions. On privacy, the website promises that event data is only accessed temporarily during synchronisation and not retained. The target audience is freelancers, small teams, clubs, churches and families who want to merge their Google and Outlook worlds. Calendar Family supports no more than these two providers – and precisely this deliberate simplicity is part of the concept.

Strengths

Where Calendar Family is strong

Free – no strings attached

For the Google↔Outlook connection, Calendar Family simply charges nothing. If you want to keep exactly these two calendars in sync and have no further requirements, you get a working tool at zero cost.

Fast synchronisation with full details

Changes run via webhooks and, according to the provider, appear on the other side within seconds – with titles, times, locations and descriptions. For private calendars where nothing needs to be hidden, that's exactly right.

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

You decide what becomes visible

Calendar Family transfers events with full details – title, location, description. Kalender Sync lets you choose per synchronisation: „busy only", „title + time" or full details, plus a custom display name for blocked slots. As soon as a work calendar is involved, you want that choice – private details don't belong unfiltered in the company tenant.

9 provider types instead of Google↔Outlook

Calendar Family stops at Google and Outlook. Kalender Sync connects Google, Microsoft Outlook/M365, Apple iCloud, GMX, WEB.DE, mailbox.org, Infomaniak kSuite, CalDAV and iCal feeds – if there's an iCloud, GMX or club feed in your mix, you need the breadth.

GMX & WEB.DE connected directly

As the only tool in this comparison, Kalender Sync connects 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 keeps your own accounts in sync. 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.

Reliability with a business model, support and 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 plus German-language support. A free tool without a visible business model can change or disappear at any time – with a paid product you know what keeps it running. Once your calendar counts for business, that's the difference.

With us, you also start permanently free

Switching is risk-free: one synchronisation is permanently free with Kalender Sync – no credit card. Only once you need more connections or providers do Basic at €4/month or Business at €10/month kick in, with a 14-day Business trial without a credit card.

Decision guide

When should you pick which?

Calendar Family is the right choice if:

You exclusively want to connect Google Calendar and Outlook.
Full event details on both sides are fine for you.
It absolutely has to be free and you can do without support and a DPA.
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 €4, Business €10/month.
You want the broadest provider coverage in this comparison: 9 provider types – Google, Microsoft Outlook/M365, Apple iCloud, GMX, WEB.DE, mailbox.org, Infomaniak kSuite, CalDAV and iCal feeds. Kalender Sync is the only tool in this comparison that connects the German providers GMX & WEB.DE.

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 14 days

Currently supported providers

Google Microsoft Apple iCloud KSuite iCal-Feeds

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