CalioConnect Calio to the tools you already use
A scheduler is only useful once it knows when you are actually free. Connect your calendar and Calio automatically works around everything already in it, meetings, client work and personal appointments. New bookings appear in your calendar the same way.
Calio only sees when you are busy, never the title or the attendees of your appointments.
Google Agenda
Connect Google Calendar to Calio: existing events automatically block your availability and new bookings appear in your Google Calendar right away.
Read more →Microsoft 365 / Outlook
Connect your Microsoft 365/Outlook calendar to Calio: existing events automatically block your availability and new bookings appear in Outlook right away.
Read more →Moneybird
Connect Moneybird to Calio: whoever books an appointment lands in your Moneybird administration as a contact right away. New contacts only; existing ones are left alone.
Read more →Mollie
Connect your Mollie account to Calio: guests pay when booking via iDEAL or card, the full amount or a deposit. The money goes straight to your own Mollie account.
Read more →Zapier
Connect Calio to thousands of apps through Zapier: every new booking or cancellation starts a zap, and from Zapier you create or cancel appointments through the REST API.
Read more →Website widget
Put your booking page in a pop-up or straight into your own website with a single line of script. Works on any site, WordPress included.
Read more →AI assistants & API
A public REST API and an MCP server, so ChatGPT, Claude or your own software can look up availability and schedule appointments.
Read more →
In development: Teamleader and Simplicate. They get a page once they actually work.
Frequently asked questions
Does Calio connect to Outlook and Google Calendar?
Yes. Calio connects to Google Calendar and to Microsoft 365 (Outlook). The connection works both ways: Calio reads when you are busy, so a double booking cannot happen, and writes confirmed bookings back into your calendar.
What does Calio see of my calendar?
Only when you are busy: the start, the end and the busy status. Calio does not read the titles, descriptions or attendees of your appointments, and never touches existing events.
Can I connect more than one calendar?
Yes. Connect all your calendars (work, personal, a shared team calendar) for the availability check, and choose per event type which calendar the booking should land in.
Is there an integration with my accounting software or CRM?
Moneybird is connected: whoever books with you lands in your administration as a contact right away. Teamleader and Simplicate are in development. For your own software there is a public REST API and an MCP server.
Calendar connected in two minutes
Create a free account, click your calendar and share your first booking link. You can disconnect again at any time.