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ICSx⁵DAVx⁵
Free

Free and open source under the GPL-3.0 licence.

 Free

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

Android Android
  • Works with any Android calendar app
  • Supports both Webcal URLs and local files
  • Two-way sync of contacts, calendars and tasks in one app
  • Works with the calendar and contacts apps already installed
  • Subscribed calendars are read-only
  • No two-way sync; DAVx⁵ is needed for that
  • Android only
  • Needs a CalDAV, CardDAV or WebDAV server to sync with
Downloadable app Downloadable app
Open source Open source
License: GPL-3.0-only License not stated
No account needed Not stated if an account is needed
Not stated if it works offline Not stated if it works offline

Checked October 2, 2026

Checked September 24, 2026

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