DAVx⁵ APK v4.5.21-ose · Latest Version for Android
DAVx⁵ syncs contacts, calendars and tasks with CalDAV/CardDAV servers like Nextcloud, and integrates with Android's own apps.
- Version
- 4.5.21-ose
- Updated
- Oct 18, 2026
- Size
- 17 MB
- Requires
- Android 7.0+
- Developer
- bitfire web engineering
- Category
- Productivity
- License
- GPL-3.0
- Package
- at.bitfire.davdroid
Screenshots
What is DAVx⁵?
DAVx⁵ connects your phone’s contacts, calendar and task apps to open CalDAV and CardDAV servers. That means you can keep your personal data on Nextcloud, a mail provider or your own server instead of Google, while still using your normal Android apps.
Key Features
- Two-way contacts, calendar and task sync
- Works with Nextcloud, mailbox.org, Fastmail and more
- Integrates with Android contacts and calendar apps
- Supports tasks via Tasks.org, OpenTasks and jtx Board
- Webcal subscriptions
Getting Started
Add an account with your server URL and credentials, choose which address books and calendars to sync, and they appear in your usual apps.
Open Source and Privacy
DAVx⁵ is developed in the open by bitfire web engineering and released under the GPL-3.0 license. The code is hosted at github.com/bitfireAT/davx5-ose, so anyone can check what the app does. The version on this page has no ads or tracking libraries flagged by F-Droid.
How to Install DAVx⁵ APK
- Tap Download and get the DAVx⁵ v4.5.21-ose APK (17 MB).
- Optional: compare the file’s SHA-256 checksum with the one on the download page.
- Open the file and allow your browser or file manager to install unknown apps if asked.
- Tap Install. Updates from the same source install over this one and keep your data, because they are signed with the same key.
Frequently Asked Questions
Is DAVx⁵ free?
Yes. DAVx⁵ is free and open-source software released under the GPL-3.0 license. It has no ads and no paid version is required to use it.
Is this DAVx⁵ APK safe?
The APK on this page is the original file published in the F-Droid repository, unmodified. Its SHA-256 checksum is listed on the download page so you can verify it, and the full source code is public.
What Android version does DAVx⁵ need?
DAVx⁵ v4.5.21-ose requires Android 7.0 or newer.
Where can I find the source code of DAVx⁵?
The source code is available at https://github.com/bitfireAT/davx5-ose. You can read it, report issues or contribute there.
