You can now use Apple Calendar (iCloud) as your scheduling calendar in Simplero. When someone books through a scheduling link, Simplero will automatically create, update, and remove events in your iCloud calendar — so your schedule always stays in sync.
This works the same way Google Calendar and Microsoft Calendar integrations do: booking events appear directly in the calendar you choose.
You'll need:
An Apple ID (the one you use for iCloud)
An App-Specific Password — Apple requires this for third-party apps to connect to your iCloud account
Go to appleid.apple.com
Sign in with your Apple ID
Under Security, find App-Specific Passwords
Click Generate and give it a name (e.g. "Simplero")
Copy the password — you'll need it in the next step

Go to Settings → Integrations → Apple Calendar
Enter your Apple ID and the App-Specific Password you just generated
Save
Once connected, your Apple calendars will appear in the Calendar dropdown on any scheduling link — just like Google or Microsoft calendars do.
Open or create a Scheduling link
In the Calendar dropdown, pick the Apple calendar you want bookings to appear in
All new bookings will now show up directly in that Apple Calendar

Simplero handles the rest — when bookings are made, rescheduled, or cancelled, your Apple Calendar updates automatically.
This integration writes events to your Apple Calendar. It's different from the iCal overlay, which only checks your calendar for conflicts without adding events.
You need one App-Specific Password per connection. If you disconnect and reconnect, generate a new one.