Real two-way sync
Two-way sync between Google Calendar and Apple Calendar — not just a read-only mirror
Most “calendar sync” tools only copy events in one direction, or need you to manually export and re-import. Seam keeps both calendars genuinely in sync — an edit made on either side reaches the other automatically.
From €6.99/mo · five-day full-access trial
What “two-way” actually means here
Create an event in Google Calendar and it appears in iCloud. Create one in iCloud and it appears in Google. Change the time, retitle it, or cancel it on either side, and the other side updates too — usually within minutes, not the up-to-24-hour lag of a subscribed read-only feed.
Deletions are handled the same way, with a safety net: every change is logged, and anything can be undone if a sync ever does something you didn't expect.
A shared calendar link isn't the same thing.
Most people's first attempt is exporting or subscribing to a calendar link. It looks like it works — until an edit or a cancellation doesn't show up on the other side.
Built to be trusted with your calendar
The permissions, the data handling, and what happens if you ever want out — stated plainly, not buried in the Privacy Policy.
It previews before it acts
Seam previews every first sync: what gets copied, what gets linked, what gets deleted. Every change is logged, and any change can be undone.
We never see your passwords
Google connects through its own sign-in. iCloud connects with an app-specific password — not your real Apple ID password — that you create yourself and can revoke at any time.
Encrypted, and only used to sync
Access tokens are encrypted at rest. Your events are read only to copy them — never sold, never used for ads.
Delete anytime, fully
Deleting your account stops all syncing and removes your data immediately, with the option to also remove events Seam created.
A person replies, not a queue
Support replies within 3 business days. Professional and Team plans get a human response in about 4 hours.
Live system status
Website, web app, and the calendar sync worker — checked live. status.seamcal.com
How it works
- 01
Connect Google
Sign in once. Nothing to export, nothing to copy.
- 02
Connect iCloud
An app-specific password — not your real Apple ID password — kept encrypted and revocable anytime.
- 03
Pick which calendars mirror each other
New events, edits, and cancellations sync both ways, automatically.
Runs on our servers, around the clock. Your phone can be off.
Simple pricing, per person.
One flat price for your own two calendars. Team pricing for shared availability without shared details.
Personal
€6.99/mo
One Google Calendar and one iCloud Calendar, kept in sync.
Most common
Professional
€12.99/mo
For consultants, agents, and anyone juggling client and personal calendars.
Team
€19/seat/mo
Shared availability across a team, without sharing event details.
Annual billing — two months free. Prefer we set it up for you? Done-for-you setup, €199 — you just connect your two accounts.
Before you ask
- What makes this different from a one-way calendar subscription?
- A subscription only ever copies in one direction and can lag up to 24 hours. Seam syncs changes both ways, typically within minutes.
- Will it duplicate my events?
- No — matching events are linked, not copied twice.
- What if I stop paying?
- Nothing is deleted. Syncing slows down; your calendars stay as they are.
- Can I undo it?
- Every change, for up to 180 days.
- Do you read my events?
- Only what's needed to copy them, and only in the calendars you pick.
Stop copying events by hand.
Sign in and connect your two calendars — setup takes about five minutes, most of it waiting for Apple.
Sign in with Apple →