About CalendarPipe

Two people in Prague, one stubborn calendar problem.

CalendarPipe is a programmable calendar sync service. It connects Google Calendar, Microsoft Outlook, and Apple Calendar (over CalDAV) through “pipes” — rules that decide which events move between your calendars and what they look like when they arrive. It is built by two engineers in Prague, Czech Republic.

Why it exists

Every calendar sync tool we tried made the same assumption: that you want everything from calendar A to appear on calendar B. That is almost never what people actually want. You want the school pickup to block your work calendar without your colleagues reading “school pickup”. You want the client call to show up on your personal calendar without the client’s name attached. You want one specific tag to cross over and nothing else.

That is a filtering and transformation problem, not a copying problem. So CalendarPipe is built around a small function that runs on every event and decides what happens to it — block it, let it through, or rewrite it first.

Who builds it

Jakub Beneš

Jakub Beneš

Founder

My wife and I share a family calendar. Events tagged with a “J” are ones I need on my work calendar. I couldn’t find a tool that let me set up that exact rule — so I built one.

GitHubXLinkedIn

Tomáš Růžička

Tomáš Růžička

Co-founder

We wanted calendar sync a developer could extend and a non-developer could set up in two minutes. So we built it.

GitHubXLinkedIn

How we build it

Your rules, not our opinions
Most sync tools decide for you what crosses between calendars. CalendarPipe hands you the decision — as a visual rule, a sentence in plain English, or TypeScript. All three compile to the same thing.
We don’t keep your calendar
Events are fetched, run through your rules, delivered, and discarded. The only events we store are the ones you create on a hosted calendar, because we have to serve those to your attendees.
Say the awkward part out loud
Our privacy policy names every subprocessor and the region it runs in, including the two that process data outside the EU. Our comparison pages say when a competitor is the better choice. We would rather you pick the right tool than the one we sell.
Small, and staying that way
Two people in Prague. No funding round to justify, no growth target that requires us to make the free plan worse. Pro is $4/month and pays for the infrastructure.

Who operates CalendarPipe

CalendarPipe is operated by Jakub Beneš, IČO 03589170, Czech Republic. That is the entity you contract with on the Terms of Service and the data controller named in the Privacy Policy. Questions of either kind go to support@calendarpipe.com.

More

  • Security — how we access calendars and what we store.
  • Pricing — the free plan and what Pro adds.
  • What’s new — what we shipped recently.
  • Contact — there is a real person on the other end.