A Calendly alternative hosted in Germany

Why EU teams look for a Calendly alternative

Calendly LLC is a US company. According to Calendly's help centre, user and invitee data is stored in US data centres run by Google Cloud and AWS. Its data processing addendum covers those transfers under the EU-US Data Privacy Framework, with Standard Contractual Clauses as the fallback if the framework stops applying.

That is a recognised legal route. Some teams still prefer not to have a US transfer in their records for every booking, or they have clients who ask where data is kept. If that's you, hosting is a fair reason to switch. If it isn't, the pricing section below probably matters more.

Where Kalendarius keeps your data

Our application and database run on Hetzner servers in Nuremberg and Falkenstein, Germany. Hetzner's data centres hold ISO/IEC 27001 certification. That is Hetzner's certificate; Kalendarius itself holds no certification.

EU hosting covers our part, not every part. If you connect Google Calendar or Microsoft 365, those providers process your calendar data under their own terms. Paddle handles payments and invoices as merchant of record, an email delivery provider sends the booking emails, and error reports go to Sentry, a US company that stores them in its EU region. You remain the controller, so the lawful basis, the questions on your booking form and the retention period are your decisions. There is more on this in Is Calendly GDPR compliant?.

Public booking pages load no advertising or analytics trackers. We do run Sentry error monitoring on them so we can fix bugs.

You pay for organizers, not for everyone on the calendar

An organizer is someone who creates booking links. Colleagues who only connect a calendar so their availability counts, such as interviewers or panel members, don't pay.

Personale is free: one organizer, one event type, 15 bookings a month. Professionista costs €5.90 a month for one organizer, five event types, unlimited bookings, analytics and webhooks. Team is €9.90 per organizer per month for up to 25 organizers, with unlimited event types and collective and round-robin links. Business is €17.90 per organizer per month and adds an audit log and single sign-on with Microsoft Entra ID. A Data Processing Agreement (DPA) for the Business and Enterprise plans is in legal review; contact info@kalendarius.com. Annual billing gives you two months free.

Say a recruiting team has two recruiters who send interview links and six hiring managers who sit on panels. On Team you pay for the two recruiters, €19.80 a month. The six managers connect their calendars and pay nothing.

What a booking looks like

Guests pick a slot on your booking page, which shows your logo and brand colour and can ask your own questions. Times appear in the guest's time zone. After booking they get a confirmation email with a calendar file, links to cancel or reschedule, and email reminders 24 hours and 1 hour before.

Each event type has its own duration, buffers, minimum notice and booking window. The location can be a Google Meet, Microsoft Teams or Zoho Meeting link that we create for each booking, a phone call, an address, or a link you paste yourself. A link can also require approval, so requests wait until you accept or reject them.

Each user can connect one Google account, one Microsoft 365 or Outlook account and one Zoho account at the same time. The Google Calendar and Microsoft 365 pages explain how each connection works.

What you give up

The feature list is shorter, and some of the gaps may matter to you. There is no import from Calendly, so you set up your event types again by hand. There is no widget to embed on your website; you link to the booking page instead. Single sign-on works only with Microsoft Entra ID, with no SAML or SCIM. Zoom links are not created automatically. Reminders are email only, at fixed times. You can't take payments at booking, and there is no mobile app.

Integrations are Google, Microsoft and Zoho calendars, plus webhooks on Professionista and up. If your workflow depends on anything else, check before you switch.