Two-way calendar sync
True two-way calendar sync, without duplicates
Edit either calendar and the other follows - creations, updates and deletions mirrored in both directions, with an engine designed to never loop or double-copy.
Start for free14-day free trial · No credit card required
How it works
Connect your calendars
Sign in with Google, Microsoft or Apple. No installs, no IT project - it all happens in your browser.
Create a sync
Pick a source and a target calendar, choose one-way or two-way, and decide what details the copies reveal.
That's it - set and forget
We keep everything in sync automatically from here. Change or pause any sync whenever you like.
Everything a calendar sync should do
Fast, push-based sync
Google and Outlook notify us the moment something changes, so copies update in moments. Apple iCloud is checked every few minutes.
One-way or two-way
Mirror two calendars completely, or copy in a single direction. Every sync has its own setting.
Privacy built in
Show full details, or hide title, description and location behind a 'Busy' block. You decide, per sync and per field.
Unlimited events and calendars
Every plan syncs unlimited events across unlimited connected calendars. Plans scale only by the number of syncs.
Popular combinations
Both directions, one sync
Choose two-way when creating a sync and both calendars become mirrors: add, move or cancel an event on either side and the other updates.
No ping-pong loops
The engine recognizes its own copies, so a synced event is never re-synced back. No duplicate chains, no echo events.
Mix directions freely
Run two-way between your two work calendars and one-way from personal to work - each sync has its own direction and privacy settings.
Frequently asked questions
What's the difference between one-way and two-way sync?
One-way copies events from a source calendar to a target. Two-way mirrors both calendars, so a change on either side propagates to the other. You pick per sync.
How do you avoid infinite loops between the calendars?
Every copy we create is marked as ours, so the engine never treats its own copies as new source events. That's the core discipline of a purpose-built sync engine - and why generic automation tools struggle here.
Which providers can I pair two-way?
Any combination of Google, Outlook / Microsoft 365 and Apple iCloud - including two accounts of the same provider.
Ready for calendar sync that just works?
Set up your first sync in 2 minutes. Google, Outlook and Apple iCloud, one-way or two-way, with your privacy protected.
Start for free14-day free trial · No credit card required