About

Calendar sync that respects your privacy

ZagCal exists to solve one annoying problem without creating a worse one: stop you being double-booked across all your calendars — without copying what's on them from one place to another.

The problem we kept hitting

Most of us live across more than one calendar: a work account, a side project, a personal one, maybe a second job. A meeting booked on one is invisible to the others, so the double-bookings pile up. The usual fix is a sync tool — but those copy your whole event across, spilling titles, guests, and notes from your work calendar into your personal one (and vice versa). You trade one problem for a privacy leak.

Our approach: one rule

ZagCal copies only the single thing that prevents a double-booking: that you're busy. When a meeting lands on one calendar, ZagCal mirrors it to the others as a generic "Busy" block — no title, no guests, no location. Your availability stays in sync everywhere; your event details never leave the calendar they live on.

There's exactly one exception, and it's yours to switch on: a per-sync full-detail mode (say, work → personal) that copies real titles between two of your own calendars. It's off by default and asks for confirmation first — the privacy-first default is always the starting point.

What we believe

• Privacy by design. The narrow, busy/free-only behavior isn't a setting we hope you find — it's how the product works out of the box.
• Least privilege. We ask providers for the minimum access needed for free/busy, encrypt every token at rest, and let you revoke access any time.
• You're in control. You choose which calendars sync, in which direction, and you can export or delete everything yourself, whenever you want.
• No surprises. We don't sell data, we don't show ads, and we don't see your payment card details — billing runs through Stripe.

Who it's for

Freelancers and consultants juggling client calendars, people with a day job and a side gig, teams that span multiple organizations, and anyone who wants a single honest view of when they're free — without handing their schedule around. When you're ready to share real availability, booking pages let people grab open slots without ever seeing what's behind them.