# DAVx⁵ (open-source calendar and contacts app)

> 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.

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.

## Key facts

| Fact | Value |
|---|---|
| Repository | https://github.com/bitfireAT/davx5-ose |
| Platforms | Android |
| Built with | Kotlin |
| GitHub stars | 2,931 |
| License | GPL-3.0-only (open source) |
| F-Droid | https://f-droid.org/packages/at.bitfire.davdroid/ (package at.bitfire.davdroid) |
| F-Droid anti-features | none flagged |
| Google Play | not linked |
| App Store | not linked |
| Website | https://www.davx5.com/ |
| Official | no |
| Category | Calendar & contacts |
| Latest release | v4.5.20-ose (Sep 27, 2026) |
| Last commit | Oct 7, 2026 |

F-Droid builds its apps from source and flags anti-features: https://f-droid.org/en/docs/Anti-Features/

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