DAVx⁵
DAVx⁵ is a free, open-source calendar and contacts app for Android. CalDAV/CardDAV Synchronization and Client. It has 2,931 GitHub stars and is released under the GPL-3.0-only license, and you can install it from F-Droid.
- Android
- Kotlin
- Calendar & contacts
- Actively maintained
About DAVx⁵
DAVx⁵ is a CalDAV/CardDAV management and synchronization app for Android which natively integrates with Android calendar/contact apps. Use it with your own server or with a trusted hoster to keep your contacts, events and tasks under your control. For more information and a list of tested servers/services, have a look at the Web site.
Privacy and F-Droid
F-Droid builds DAVx⁵ from its published source code and flags anti-features such as ads, tracking or reliance on non-free services.
No anti-features flagged on the latest F-Droid build.
Screenshots
Screenshots from the app's F-Droid listing.
Similar apps
More open-source calendar and contacts apps
Tuta Calendar
tutao/tutanota
Quantum-safe encrypted planner to schedule & manage your events & sync calendars.
OfficialCalendar & contactsAndroidiOS
Etar
Etar-Group/Etar-Calendar
Etar is a material designed open source calendar, for everyone!
Calendar & contactsAndroid
Fossify Calendar
FossifyOrg/Calendar
Securely plan, schedule, and set reminders with our private calendar app.
OfficialCalendar & contactsAndroid
Birday
m-i-n-a-r/birday
A simple yet useful birthday manager. Birday is free and ad-free!
Calendar & contactsAndroid
Persian Calendar
persian-calendar/persian-calendar
Android Persian Calendar.
Calendar & contactsAndroid
Fossify Contacts
FossifyOrg/Contacts
Manage your contacts privately and efficiently with vCard support.
OfficialCalendar & contactsAndroid
What is DAVx⁵?
DAVx⁵ is a free, open-source calendar and contacts app for Android. CalDAV/CardDAV Synchronization and Client. It has 2,931 GitHub stars and is released under the GPL-3.0-only license, and you can install it from F-Droid.
Is DAVx⁵ free and open source?
Yes. DAVx⁵'s source code is public on GitHub under the GPL-3.0-only license, which is OSI-approved or FSF-free. F-Droid, which builds it from source, flags no anti-features such as ads or tracking on its latest build.
How do I install DAVx⁵?
You can install DAVx⁵ from F-Droid (package at.bitfire.davdroid); the links are on this page. Its GitHub repository also publishes releases (latest: v4.5.20-ose).
Is DAVx⁵ still maintained?
The repository's most recent commit was on Oct 7, 2026. Its F-Droid listing was last updated on Sep 29, 2026. appsgit only lists apps whose repository had a commit in the last six months.