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Refer Kalender Sync to your network and get 30 days of Business on the house

Kalender Sync

Pricing

Fair pricing, clear promise

Start free. Scale when you need to. Pay yearly and save 2 months. No hidden fees, no contract traps.

Free

0 / month

Perfect when you just want to show your availability to one person.

  • 2 calendar accounts
  • 1 sharing
  • Google & Outlook
  • 30-minute interval
Start free
Popular

Basic

4 / month

For freelancers, tax advisors, coaches – anyone juggling multiple calendars day-to-day.

30 days free · no credit card

  • 5 calendar accounts
  • 5 syncs
  • Self-Sync included
  • + Apple iCloud & KSuite
  • Real-time via webhook
  • Email support
Try 30 days

Business

10 / month

For teams and companies that want to kill calendar chaos at scale.

  • Unlimited accounts & syncs
  • Self-Sync included
  • All providers + iCal feeds
  • Real-time via webhook
  • Priority support + call
Choose Business

All tiers GDPR-compliant · Hosted in Germany · Cancel anytime · The trial ends automatically – nothing is charged unless you activate a plan.

Feature comparison

What's in each plan?

Every feature side by side – including every supported calendar provider.

Feature Free €0 / mo. Basic €4 / mo. Business €10 / mo.
Sync & connections
Calendar accounts 2 5 Unlimited
Active syncs A sync connects two calendars — e.g. Outlook ↔ Google. 1 5 Unlimited
Bidirectional sync (both ways)
Self-Sync (multiple own calendars)
Share calendars with others 1 sharing 5 sharings Unlimited
Sync interval How fast changes propagate. 30 minutes Real-time (webhook) Real-time (webhook)
Supported providers
Google Calendar
Microsoft Outlook / 365
Apple iCloud
KSuite (Infomaniak)
iCal feeds (import)
CalDAV (generic) Soon Soon
Privacy & hosting
Free/Busy only (no event details)
Custom label for blocked slots
Hosted in Germany (Hetzner)
GDPR-compliant
Data Processing Agreement (DPA) available On request On request
Support
Help center & guides
Email support
Priority support
1:1 onboarding call

FAQ

Common questions – short answers

How does the 30-day trial work?
Every new account starts with 30 days of Basic — no credit card, no subscription, no charges. You can use Self-Sync, connect Apple iCloud and KSuite and set up to 5 sharings right away. After 30 days you roll seamlessly into the free Free plan if you don't pick anything else.
Why pay annually?
You pay for 10 months and use 12 – two months free. Cancel anytime; your plan then runs to the end of the paid period and is not renewed afterwards.
What exactly gets synced?
Kalender Sync moves Free/Busy information between your Outlook, Google and iCloud calendars. KSuite and iCal feeds work the same way. Titles, notes and event details stay private – they're never copied to the other side.
How do you handle privacy and GDPR?
Hosted exclusively in Germany (Hetzner, Nuremberg), no third-country transfers, a Data Processing Agreement (DPA) is ready for every tier. We only access the availability data we actually need — nothing more.
Can I switch or cancel later?
Yes, anytime with a single click in your account. On cancellation your plan runs to the end of the paid period – your data sticks around in case you come back.

Ready to end your calendar chaos for good?

Try free for 30 days

Currently supported providers

Google Microsoft Apple iCloud KKSuite iCal-Feeds

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