masterGet a single view of your rental calendars
Merge iCal calendars automatically.
mastercalendar.io automatically merges calendars from Airbnb, VRBO, OurSharedPlace, Booking.com and more into a single source of truth. Cal the Robot takes up to 10 iCal feeds and synchronizes them into one, adding any rules you want for buffer days, and pushes a single master calendar iCal feed back everywhere. Stop double bookings, and list in many places!
Import. Sync. Export.
- Merge & deduplicate
- Loop prevention
- Get alerted with conflicts
- Auto-add Buffer days
- Get Webhook upon changes
Optional:
/cal/abc123.icsSubscribe every platform to this single synchronized .ics feed
Everything you need to keep calendars in sync
Multi-Platform Import
Connect iCal feeds from Airbnb, VRBO, Booking.com, OurSharedPlace.com, and any platform that exports .ics files.
Smart Loop Prevention
Our export feed tags events so they're never re-imported, eliminating the infinite echo problem.
One Export Link
Get a single .ics URL per property. Subscribe every platform to it and you're done.
Buffer Days
Automatically block days before and after each booking for turnover and cleaning.
Sync Health Dashboard
See at a glance which feeds are healthy, when they last synced, and catch issues early.
Multi-Property Support
Manage one unit or a hundred. Each property gets its own feeds and export link.
How it works
- 1
Add your properties
Create a property for each rental unit you manage.
- 2
Paste your iCal URLs
Grab the export link from Airbnb, VRBO, or any other platform and add it as a source feed.
- 3
Share one export link
mastercalendar.io generates a single .ics URL. Subscribe every platform to it — bookings stay in sync automatically.
Works with your platforms
Any calendar that publishes a standard iCal (.ics) feed is supported.
- Airbnb
- VRBO
- Booking.com
- Google Calendar
- Apple iCloud
- Outlook / 365
- OurSharedPlace
- RFC 5545 iCal
We're always adding more. Let us know which platforms you use.
Simple pricing
Every plan includes a 14-day free trial.
Single Property
$9
per month
- 1 property
- 10 source feeds
- Syncs every 30 minutes
- Sync health dashboard
Managing multiple properties?
Faster syncs, buffer days, and alerts for property managers.
Pro
$24/mo
- Up to 10 properties
- 10 source feeds per property
- Syncs every 15 minutes
- Buffer days per your settings
- Email + webhook sync alerts
Business
$49/mo
- Up to 50 properties
- Unlimited source feeds
- Syncs every 10 minutes
- Buffer days
- Email and webhook alerts
Need more? Inquire
From the Blog
How to Prevent Double Bookings Between Airbnb and VRBO
Listing on both Airbnb and VRBO doubles your exposure -- but it also doubles your risk of double bookings. This step-by-step guide covers iCal sync setup, centralized calendar merging, buffer days, and overlap alerts to keep your availability accurate across both platforms.
Read more
How to Merge Multiple Rental Calendars Into One View
Managing five tabs and three apps to see your bookings is not a system. Learn how to combine iCal feeds from every platform into a single calendar you can check in Google Calendar, Outlook, or Apple Calendar.
Read more
Why You Need Buffer Days Between Bookings (and How to Automate Them)
Turnover time matters. Learn why smart hosts block days between guests for cleaning and prep, and how to add buffer days automatically so you never have a same-day turnaround surprise.
Read more