Calio vs Cal.com: EU hosting without self-hosting

Cal.com started as the open-source favourite, but its cloud version runs on US infrastructure. Real EU data residency means hosting it yourself, DevOps work and maintenance included. Since 2026 the main codebase is also closed-source, with "Cal.diy" as the community edition.

Calio gives you the privacy benefit without the operational burden: a ready-made scheduler that runs entirely inside Europe by default.

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Calio and Cal.com side by side

Feature	Calio	Cal.com
Public booking page	Unlimited event types, including on the free plan	Yes, free for individual use
Double bookings	Impossible, enforced at database level	Prevented through calendar checks
Confirmations & reminders (email)	Automatic, 24 hours and 1 hour before	Yes, workflows partly paid
Guests reschedule or cancel themselves	Through the link in their email	Yes
Google & Microsoft calendar sync	Busy-time sync + bookings written to your calendar	Yes, plus other calendar providers
EU data hosting	Servers and database in Amsterdam	Only by self-hosting (the cloud is US-hosted)
European company & support	Dutch company; guest flow in Dutch, English, German and French	No, US company
iDEAL payments	Pay in full or a deposit at booking, through Mollie	No, payments through Stripe
Round-robin for teams	One link, meetings shared across the team	Yes, including on the free plan
AI booking in plain language	Guests type what they need; Calio offers real open slots	Cal.ai phone agent (paid, per minute)
Recurring appointments	Weekly, fortnightly or every four weeks; booked in one go	Yes
Mail agent: your planner in the cc	Suggests times from your calendar and books; you approve every message	No; Cal.ai calls, it does not join your email thread

Cal.com features based on public information and reviews; they may differ per subscription and may have changed since.

What does it cost?

Cal.com charges (as of August 2026) $12 per user per month for Teams (billed yearly; about $16 monthly) and $28 for Organizations; individual use is free. Calio has a free plan that stays free; paid plans start at €8 per user per month billed yearly. Prices may have changed since; always check the vendor’s current pricing page.

Prices last checked in August 2026. Current Cal.com pricing

Why people switch to Calio

EU privacy without DevOps

With Cal.com, EU data residency means hosting, updating and securing it yourself. Calio runs entirely inside Europe by default, you create an account and you are done.

Built for the European market

Guest emails in Dutch, English, German or French, EU payment methods through Mollie (iDEAL, card) and a roadmap aimed at European tooling.

Simplicity over configuration

Cal.com is powerful but configuration-heavy. Calio sticks to the essentials: share a link, connect a calendar, done.

Frequently asked questions

Is Calio open source like Cal.com?

No. As it happens, Cal.com itself has been largely closed-source since 2026 (the community edition is called Cal.diy). Calio makes a different promise: a managed service that runs entirely in the EU by default.

Why not just self-host Cal.com?

You can, but then servers, updates, backups and security are yours to run. Calio gives you EU hosting as a service, with nothing to administer.

What does Calio cost compared to Cal.com?

Both have a free plan for individual use. Calio’s paid plans start at €8 per user per month billed yearly; Cal.com Teams is $12 (as of August 2026).

Try Calio for free

Booking link in 2 minutes, calendar connected, data in Europe. No credit card needed.

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