DAVdroid – CalDAV/CardDAV Synchronization
If you're encountering problems please contact us: [email protected] or have a look at our forums: https://www.davdroid.com/forums/ instead of down-voting the app so that we can provide support.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 DAVdroid account from within the app. See https://www.davdroid.com/tested-with/ for help. For more information, please see the manual: https://www.davdroid.com/manual/, the FAQ: https://www.davdroid.com/faq/ and our forums: https://www.davdroid.com/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 sourceImportant compatibility notesAttention: 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 computerWhy is it secure?⊛ Source code is available (see homepage)⊛ No need for giving your contacts/calendars to Facebook, Google, etc. Use your own server (or a trusted one)!⊛ TLS is recommended to protected your communication so synchronization is secure even when using open Wi-Fi networks.Successfully tested with:⊛ AOL⊛ Apple's Calendar and Contacts Server⊛ Apple iCloud⊛ Baïkal⊛ Bitrix24⊛ contactzilla⊛ CozyCloud⊛ DAViCal⊛ eGroupware⊛ fastmail⊛ fruux⊛ GMX⊛ Group-Office⊛ Horde⊛ IceWarp⊛ iCloud⊛ Kerio Connect⊛ KolabNow⊛ Mac OS X Server⊛ mailbox.org⊛ mail.de⊛ Nextcloud⊛ openCRX⊛ Oracle Communications UCS⊛ OwnCloud⊛ OwnCube⊛ posteo.de⊛ Radicale⊛ SOGo⊛ Synology DSM⊛ Tine 2.0⊛ web.de⊛ Yahoo (calendars only)⊛ Yandex⊛ Zimbra Server⊛ … and many others: https://www.davdroid.com/tested-with/