Sync your CalDAV calendars and CardDAV contacts with Android’s built‑in Calendar and Contacts apps.
Pay once – no subscription, privacy‑friendly sync for your own DAV server.

🌟 Features
• Optimized for Nextcloud CalDAV and CardDAV
• Reliable CalDAV calendar sync (RFC 4791)
• Reliable CardDAV contact sync (RFC 6352)
• Bidirectional sync with Android Calendar and Contacts
• Background sync with configurable intervals
• Conflict detection and safe resolution
• Full and incremental sync support
• Backup and restore of app settings

💽 Data Management
• Multiple account support (Nextcloud and other compatible DAV servers)
• Per-calendar and per-address-book selection
• Calendar and address book management from within the app
• Deep integration with Android Calendar and Contacts providers
• Create, edit and delete events and contacts directly from Android apps
• Offline data caching for reliable sync, even with unstable connections

🛡️ Security & Privacy
• Encrypted credential storage using Android Keystore
• TLS/SSL certificate validation for secure connections
• No data collection or telemetry
• No third-party analytics or tracking
• All data stays between your device and your own server

🎨 User Experience
• Modern Material 3 design
• Dark mode support
• Easy account setup
• Per-collection sync control
• Multiple account support
• Calendar and address book management

🌟 User experience
• Modern Material Design 3 interface
• Full dark mode support
• Guided account setup for typical Nextcloud configurations
• Per-collection sync control for fine-grained control over what is synced

🛠️ Work in progress
• Planned WebDAV file sync support