Laying out the streets…STEP 1 OF 3

Kalender Sync · Office #48,113

Sync your calendars & connect them to ChatGPT, Claude & Co.

In the Calendars and time zones neighborhood (Work and office). In town since 22 Oct 2026.

Nobody has claimed this office yet. Tablif records every new product and gives it an office; when its owner claims it, the lights go on.

Is this yours? Claim it

What Tablif read on Kalender Sync's site

Kalender Sync describes itself as: “Sync calendars: Outlook, Google & iCloud | Kalender Sync”

What it is

Calls itself “Kalender Sync”.

  • Calls itself: Kalender Sync
“Kalender Sync connects Outlook, iCloud, Google, GMX, WEB.DE, mailbox.org, Posteo, STRATO & kSuite in real time – one- or two-way .”

Where it puts itself

Publishes a comparison page.

“2sync -> https://kalender-sync.de/en/compare/2sync/”

What it costs

Monthly subscription and yearly plan. A free tier, free forever. Trial: “7 days”. Prices quoted: €0 / month, €12 / month, €5 / month.

  • Monthly: yes
  • Yearly: yes
  • Free plan: free forever
  • Price: €0 / month · €12 / month · €5 / month
  • Trial: 7 days
“Yearly −2 months”
“Free forever · no credit card”
“Free forever”

Who it sells to

Sells to businesses and consumers. Built for enterprise and solo users. Made for Coaches, Freelancers and Tax advisors.

  • Sells to: businesses and consumers
  • Company size: enterprise · solo / indie
  • Made for: Coaches · Freelancers · Tax advisors
“For teams & companies: meet Ridian For Team & Enterprise users”
“For Team & Enterprise users: Ridian is coming to town!”

How it runs

Hosted in the cloud. Offers an API. AI is a side feature.

  • Runs where: cloud / hosted
  • API: yes
  • AI role: a side feature
“Your data is processed in line with GDPR and hosted on servers in Germany.”
“…kalender-sync https://app.kalender-sync.de/mcp”

What it works with

Plugin for ChatGPT. Names Claude, Google and 5 more on its pages.

  • Plugin for: ChatGPT
  • Names: Claude · Google · Outlook · +4
“Sync your calendars & connect them to ChatGPT, Claude & Co.”
“Keep Google, Outlook, iCloud and supported CalDAV calendars in sync, one-way or two-way.”

What it offers as proof

Live, no waitlist. Shows customer logos. Claims “1,000”. Compliance: GDPR. Try it without signing up. Publishes docs and a blog.

  • Customer logos: yes
  • Number claimed: 1,000
  • Compliance: GDPR
  • Instant signup: yes
  • Trial asks for: nothing
“Try for free”
“No credit card required.”

Sources

Tablif read these pages, last on 22 Oct 2026. Everything above is what the product says about itself; Tablif does not verify every claim.

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