DAVx⁵ (DAVdroid) – CalDAV/CardDAV Synchronization

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    DAVx⁵ (formerly DAVdroid) is the only all-in-one synchronization solution for your contacts (CardDAV), calendars (CalDAV) and your tasks (based on VTODO). The app is easy to set up and integrates perfectly with your favorite calendar/contacts app (including default apps). It can also be used seperately, if you either have CalDAV, CardDAV or only Tasks.

    Compatible with almost every CalDAV/CardDAV servers and services, including Nextcloud, iCloud and Synology!

    After installing, you can add a DAVx⁵ (formerly DAVdroid) account from within the app. See for help. For more information, please see the manual:, the FAQ: and our forums:

    Key features:

    ⊛ Sync your DAV calendars (CalDAV) and address-books (CardDAV) and Tasks in a single app
    ⊛ Two-way synchronization (server client)
    ⊛ Native Android 4+ implementation
    ⊛ Flawless integration with your device and favorite apps
    ⊛ Easy setup (resource auto-detection, support for self-signed certificates, authentication by client certificates)
    ⊛ Fast algorithms for high performance (CTag/ETag, limit sync time range for past events)
    ⊛ Optimized for phones and tablets
    ⊛ Super-secure and we respect your privacy!
    ⊛ DAVdroid is completely open source

    Important compatibility notes

    Attention: DAVx⁵ (formerly DAVdroid) must not be moved to the SD card! This will cause strange behaviour, including account and data loss.

    Get the best out of this app …

    ⊛ … when using with your own DAV server (Radicale, DAViCal, SabreDAV, Baikal, …) and HTTPS – so you own and control all your data while having the comfort of synchronization between various devices. Or use a hosted DAV service you trust or the one of your company.
    ⊛ … and combine it with Evolution / Thunderbird / etc. on your computer

    Successfully tested with:

    ⊛ AOL
    ⊛ Apple's Calendar and Contacts Server
    ⊛ Apple iCloud
    ⊛ Baïkal
    ⊛ Bitrix24
    ⊛ contactzilla
    ⊛ CozyCloud
    ⊛ DAViCal
    ⊛ eGroupware
    ⊛ fastmail
    ⊛ fruux
    ⊛ GMX
    ⊛ Group-Office
    ⊛ Google
    ⊛ Horde
    ⊛ IceWarp
    ⊛ iCloud
    ⊛ Kerio Connect
    ⊛ KolabNow
    ⊛ Mac OS X Server
    ⊛ Nextcloud
    ⊛ openCRX
    ⊛ Oracle Communications UCS
    ⊛ OwnCloud
    ⊛ OwnCube
    ⊛ Radicale
    ⊛ SOGo
    ⊛ Synology DSM
    ⊛ Tine 2.0
    ⊛ Yahoo (calendars only)
    ⊛ Yandex
    ⊛ Zimbra Server
    ⊛ … and many others:

    Users review

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