---
title: Kalender-Sync Reviews
meta_title: 'Kalender-Sync Reviews 2026: Details, Pricing, & Features | G2'
meta_description: Filter reviews by the users' company size, role or industry to find
  out how Kalender-Sync works for a business like yours.
date_modified: '2026-05-12'
parent_category:
  name: Collaboration & Productivity
  url: https://www.g2.com/categories/collaboration-productivity
---

# Kalender-Sync Reviews
**Vendor:** PPJ Venture Labs  
**Category:** [Calendar Software](https://www.g2.com/categories/calendar-software)
## About Kalender-Sync
Kalender Sync is a GDPR-compliant SaaS for synchronizing calendar availability across providers. Unlike US-based tools that copy entire events (titles, attendees, notes) between calendars, Kalender Sync only transfers Free/Busy slots — your private event details never leave the calendar where you created them. Supported providers: Google Calendar, Microsoft Outlook / Office 365, Apple iCloud (CalDAV), KSuite / Infomaniak (CalDAV), and any iCal feed. Real-time sync via OAuth webhooks (no polling). Hosted at Hetzner in Germany. Data Processing Agreement (DPA / Auftragsverarbeitungsvertrag) available. Built for DACH professionals, freelancers, and small teams who can't compromise on data sovereignty.






- [View Kalender-Sync pricing details and edition comparison](https://www.g2.com/products/kalender-sync/reviews?section=pricing&secure%5Bexpires_at%5D=2026-07-11+03%3A30%3A51+-0500&secure%5Bsession_id%5D=2b226482-421d-4445-a91b-2db269a6cf7a&secure%5Btoken%5D=366407bbf2ae50c6e30628c4f4f6365d1eb20f467ecd81b569a07a47343a6b9b&format=llm_user)

## Kalender-Sync Features
**Calendar View**
- Multi-Calendar View
- Customizable Viewing

**Shared Calendar**
- Calendar Collaboration
- Multiple Calendar Management

**Accessibility**
- Screen Reader Compatibility
- Keyboard Shortcuts

**Integration**
- Sync Multiple Calendars
- Import Events
- Software Integrations

**Notifications**
- Customized Calendar Notifications
- Location-Based Alerts

**Generative AI**
- AI Text-to-Image
- AI Text-to-Speech
- AI Image-to-Text

**Agentic AI - Calendar**
- Cross-system Integration

## Top Kalender-Sync Alternatives
  - [Zoom Workplace](https://www.g2.com/products/zoom-workplace/reviews) - 4.5/5.0 (53,514 reviews)
  - [Google Workspace](https://www.g2.com/products/google-workspace/reviews) - 4.6/5.0 (45,617 reviews)
  - [ClickUp](https://www.g2.com/products/clickup/reviews) - 4.6/5.0 (12,501 reviews)