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EteSyncDAVx⁵
Freemium

The hosted service is paid after a free trial; running your own server is free.

 Free

The open-source edition is available at no cost from F-Droid.

Android, iOS, Web, Self-hosted Android
  • Zero-knowledge end-to-end encryption
  • Works with existing contact and calendar apps
  • Two-way sync of contacts, calendars and tasks in one app
  • Works with the calendar and contacts apps already installed
  • Hosted service requires a paid plan after the trial
  • Desktop apps need the separate DAV bridge
  • Android only
  • Needs a CalDAV, CardDAV or WebDAV server to sync with
Downloadable app, Web application, Self-hosted, Hosted service Downloadable app
Open source Open source
License not stated License not stated
Account needed Not stated if an account is needed
Not stated if it works offline Not stated if it works offline

Checked October 1, 2026

Checked September 24, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.