One calendar hub
Outlook, Google, iCloud, Zoom and ICS subscriptions side by side. Your connections belong to you and block your time in every team you work for.
Calendar hub · Online booking · Chat
Simplify your scheduling.
AI-powered tool to manage meetings, appointments and events, all from one dashboard.
Request a demoCreate a free iSAP account
Sign in with your iSAP account. No new password.
Works with the calendars you already use
- Microsoft 365 & Teams
- Google Calendar & Meet
- Zoom
- iCloud
- CalDAV & ICS
- iPhone calendar
Streamline your scheduling with iCalendar.one
iCalendar.one brings every calendar of your team together, finds the times when everyone is really free and turns them into bookable appointments with the right meeting link.
- Only offers times that are free in all connected calendars
- Writes new appointments into the calendar you choose, with a Teams, Meet or Zoom link
- Customers book, reschedule and cancel without an account
What we offer
Free times, calculated
Working hours, exceptions, buffers, minimum notice and daily limits. Time zones and daylight saving time handled correctly.
Online booking Coming soon
Your own booking page for every event type. Customers need no account and get confirmations with a calendar file.
Meeting links included Coming soon
Teams, Google Meet or Zoom links are created automatically and land in your calendar within a minute.
Chat with customers Coming soon
Every booking comes with a chat, like on isapexchange.com. You answer from the web app or your iPhone.
API & webhooks for iSAP.One Coming soon
Availability, bookings and messages via REST API. Signed webhooks inform your systems immediately.
Teams & workspaces
Personal and company workspaces with roles. Invitations only count when the person accepts them.
Privacy by design
Servers in the EU, access data encrypted, only the permissions that are needed. Health data never leaves the device for AI.
Always up to date, in the background
A background worker keeps every connected calendar in sync, so your free times are right before a customer even looks.
- Google and Microsoft report changes within seconds
- iCloud and ICS subscriptions are checked every 15 minutes
- Access is renewed automatically; you are told when a connection needs attention
- Nothing gets lost: failed jobs are retried and visible
iPhone app coming soon
Made for iPhone, with Apple Intelligence
The iCalendar.one app puts your appointments where you need them, for providers and their customers in one app.
Works fully without Apple Intelligence. Android and Huawei follow.
- Siri and Shortcuts: “When is my next appointment?”
- Widgets and a Live Activity with a join button 15 minutes before
- AI on your device for summaries and replies, clearly marked and editable
- Your iPhone calendar counts as busy, only start and end leave the device
- Appointments in Apple Wallet
How it works
- 1
Connect your calendars
Sign in with your iSAP account and connect Outlook, Google, Zoom or iCloud in a few clicks.
- 2
Set hours and event types
Choose when you work, how long appointments take and where they happen.
- 3
Share your booking page
Customers pick a free time. The appointment appears in your calendar, with the meeting link.
Pricing
Every team is different. Tell us what you need and we will make you an offer.
Personal
For freelancers and single practitioners
Price on request
- All calendar connections
- Unlimited event types
- Booking page and chat
- iPhone app
Team
For practices, agencies and offices
Price on request
- Everything in Personal
- Company workspace with roles
- Shared booking rules
- Priority support
iSAP.One
For companies on iSAP.One
Price on request
- Everything in Team
- REST API and webhooks
- Integration into iSAP.One
- Individual onboarding
About us
iCalendar.one is built by the iSAP group, the team behind iSAP Exchange and iSAP.One.
We build tools that save small and large companies time, with one iSAP account for everything, clear privacy rules and servers in Europe.
Request a demo
We show you iCalendar.one with your own calendars and answer every question. Usually within one working day.