Your calendars can’t see each other.
Now they can.
For consultants and fractional operators with a calendar at every client.
Google · Outlook · iCloud · Fastmail · Nextcloud · CalDAV·subscribed feed URLs (view only)
$14.08 a month for Pro afterwards, billed annually. Card required, cancel any time. Free: no card, ever.Only need two calendars? Start free
Set up in about four minutes
- 01
Connect your accounts
Sign in with one calendar account, then add the others.
- 02
Choose what to sync
Pick the calendars, set which way events travel, and decide what each copy shows.
- 03
It runs, and it tells you when it can't
Google and Outlook update each other within seconds. iCloud, other CalDAV calendars and iCal feeds are checked every 15 minutes, so a booking there can take that long to block your other calendars. If an account ever needs reconnecting, the sync stops rather than guessing, and we email you which one.
Which of these is your week?
- 2+ organisations
Consultants & contractors
A calendar at every client, and none of them should see the others. When one books you, the rest just see you're busy.
- 3–5 accounts
Fractional & multi-company operators
Three companies, three logins. Each calendar blocks the right time in the others, and you still see all of it in one place.
- a team, at several clients
Agencies & studios
Everyone on the team holds seats in client accounts. One bill covers everyone, and each person's own events stay theirs.
- an employer and your own
A main job and a venture
Two employers, two calendars that must not meet. Your day job sees a blocker. Your own company sees the real thing.
- any number of calendars
Anyone whose AI assistant runs their week
Claude, Cursor or any MCP client can check every calendar you own, book on the right one, and move things when plans change.
See every arrangement·just a work and a personal calendar? the free plan covers that
What crosses, and what a copy looks like
A copy carries the time. Everything else is a decision you make once, when you connect the calendars up.
01
What do other people end up seeing?
Colleagues see that you're busy, not why
Copies are titled "Busy" whenever a sync touches a calendar you don't own outright — every shared, delegated or one-way arrangement — on every plan. A two-way sync between calendars you own alone starts out keeping real titles; set it to "Busy" if colleagues can see either one.
| Field | Original | Copy |
|---|---|---|
| Dentist | Busy | |
| Date and timealways copied | Tue 14 Oct · 09:30 – 10:15 | Tue 14 Oct · 09:30 – 10:15 |
| Busy | Busya Free event would stay Free | |
| Bring the X-ray | not copied | |
| Anna, Ben | not copied | |
| Bahnhofstrasse 12 | not copied | |
| 30 minutes before | not copied | |
| the calendar's own | Sage |
Control 8 event fields with 7 settings — per sync, or per calendar on Pro.
Plus filters, working hours and how far ahead, for the sync as a whole.
02
Can one calendar differ from another?
On Pro: show one calendar the real title and another just "Busy"
One sync, a different rule for each calendar in it: title, guests, colour, description, reminders and more.
03
Which events cross at all?
Leave out the events that don't belong there
Skip all-day events, anything with a word you choose, or free time.
Common questions
- What exactly is a “sync”?
- A sync is a group of calendars connected by one rule, covering direction and what detail travels. There are two shapes. Mirror: every calendar in the group copies its events to every other one. Push: your sources copy onto your targets, and the sources are left alone. Mirror is the default. Worth knowing before you build one: in a Mirror, every calendar copies to every other, so if two of the calendars are both yours you will see the same event twice — once as your own and once as a copy. Use Push, or two separate syncs, when you want events going one way only.
- Is it really free?
- Yes. 2 accounts and 2 calendars, with no time limit and no card. The 7-day trial is a separate thing: it opens up the paid plans, and it does need a card. Paid plans add more accounts and more syncs; see pricing for the current rate in your currency.
- What happens if I cancel my subscription?
- Your syncs keep running until the end of your billing period. After that you drop to the free plan, which syncs 30 days ahead — so copies further into the future than that are removed, while everything nearer carries on syncing. Only copies SYNCDATE created are ever removed; your own events are never touched. Upgrading again widens the window, but copies already removed don't come back on their own — re-syncing recreates them.
- What calendars do you support?
- Google Calendar, Microsoft Outlook, CalDAV providers (iCloud, Fastmail, Nextcloud), and iCal feeds. All support two-way sync except iCal, which is read-only.
- Does it work with Google Workspace?
- Yes. SYNCDATE works with both personal Gmail accounts and Google Workspace (business) accounts. You can sync between them freely.
- How is this different from sharing my Google Calendar?
- Sharing lets you see another calendar, but it doesn't block time or show up in "Find a Time." SYNCDATE actually syncs events so your availability is accurate to everyone scheduling with you.
- What happens to recurring events?
- Recurring events sync as full series, not individual instances. When you create a weekly meeting, the entire recurrence rule is copied — so all future instances stay in sync automatically.
- Can I undo synced events?
- Yes. When you delete a sync you can have it remove every event it created, so no "Busy" blocks are left behind. Your own events are never touched — we only ever delete copies we made.
- Will my colleagues or clients get emailed when a copy is created?
- No. Copies carry no attendees by default, so there is nobody for a calendar to notify — the copy is a block of time, not an invitation. If you switch attendee copying on, we explicitly ask the calendar not to send anything: on Google that is a setting on every write and it holds. Outlook and other servers are asked the same way, but a company's own mail server can be configured to overrule it, so on a corporate account treat it as very likely rather than guaranteed.
- What if the same event is edited in both calendars at once?
- The later edit wins. Every calendar stamps an event with the time it was last changed, and the change carrying the later stamp is the one that survives — the other is overwritten. There is no merge and no prompt: the event is the unit, not the field, so an edit that only moved the location still replaces the whole copy. In practice, edit in one place.
- What happens if SYNCDATE loses access to one of my accounts?
- You get an email naming the account that needs reconnecting, and the sync stops instead of carrying on without it — carrying on would mean treating the events it can no longer read as deleted. We keep the marker of where we got to, so reconnecting resumes from that point rather than starting over. Worth knowing: it does not recover on its own. A revoked or expired login never starts working again by itself, so the sync stays stopped until you reconnect it.
- Can my employer see my personal event details?
- Only if you choose to show them. Set a sync's title option to "Busy" and the copy carries no title, no description and no guests — colleagues see that you're unavailable and nothing more. Worth knowing where a new sync starts: when every calendar in a two-way sync is one you own, it begins by copying the real title, on the assumption that both calendars are yours. If your work calendar is one other people can see, switch that setting to "Busy" when you set the sync up.
- Is my data safe?
- Google and Outlook use OAuth; CalDAV credentials and iCal feed URLs are encrypted like tokens with AES-256-GCM. Sync state stores provider IDs, timestamps, and status, while the read-only calendar view may cache event display fields so it can render quickly. Hosted in Germany (EU), GDPR compliant.
Still have questions? Get in touch
Busy to the client. The real thing to you.
$14.08 a month for Pro afterwards, billed annually. Card required, cancel any time. Free: no card, ever.