Sync your contacts with CardDAV, FTP, HTTP, WebDAV servers or local files
Pros & Cons
Very broad support for CardDAV, WebDAV, FTP, HTTP, cloud storage, and local files
Two-way sync with encryption for data protection
Backups/archives and per-source interval control for flexible syncing
Guided setup and compatibility with major servers and clients (e.g., Nextcloud, iCloud, Owncloud)
Modest recent growth (21 downloads in the last 30 days) despite 5K+ total downloads
Premium price point at $3.99 with a two-week trial; no extended free tier noted
Location permissions and background location access may raise privacy considerations for some users
About ContactSync - CardDAV and more
ContactSync - CardDAV and more is a productivity app developed by Calendar/Task/Contact Sync Mobile.
Download Statistics
ContactSync - CardDAV and more has been downloaded 6.4 thousand times. In the last 30 days, the app was downloaded 26 times.
User Ratings
ContactSync - CardDAV and more is rated 4.86 out of 5 stars. The rating is based on 180 ratings.
App Information
ContactSync - CardDAV and more costs $3.99 to download. The APK download size is 4.69 MB. The latest version available is 10.0. The last update was on August 22, 2025.
Technical Requirements
ContactSync - CardDAV and more requires Android 2.2+ or higher. The app has a content rating of Everyone. The app has been available on Google Play October 2012.
Description
ContactSync syncs your contacts with CardDAV, FTP, HTTP, WebDAV servers, Cloudstorage, or local files (stored on the device or e.g. as a mail attachment). A quick overview on the most important features is given below.
Do you want to check out the app for free? You can test the app and all its features without any limitations for two weeks. Simply install its free trial version from: https://play.google.com/store/apps/details?id=com.vcard.android.free
You would like to access the next major update bringing a novel user interface, new features, and guidance/support system? Then check out the open beta test here: https://play.google.com/apps/testing/com.vcard.android
The app has been successfully tested with more then 50 different CardDAV Servers like Nextcloud, Apple iCloud, Fruux, Marketcircle Daylight, Synology, or Owncloud. You can find a list of tested systems here: http://ntbab.dyndns.org/apache2-default/seite/carddavproviderCE.html
Overview on the most important features: ⊛Comprehensive support - Questions or suggestions? Simply write me a mail. ⊛Syncs with many different sources - CardDAV, WebDAV, FTP, HTTP, Cloudstorage, local files, mail attachments and many more (Of course, it also supports encryption and two way sync) ⊛Complex configuration? No worries, the app guides you through all the steps ⊛Create backups or archive your contacts manually or automatically ⊛Flexibility - There are already contacts/groups stored on the device which should be pushed to the server? You need individual sync intervals for each of your contact data sources? No worries, this is possible! ⊛Designed for high speed and resilient address book synchronization ⊛Seamless integration with your device and your preferred contact apps ⊛Secure: All the sensitive information are encrypted before they are stored ⊛No secrets, you can - if you wish - always see what is happening and why ⊛Supports complex address books situations, servers and clients ⊛Supporting vCards (contacts/groups) in all available versions (4.0, 3.0, and 2.1) ⊛Supports self-signed certificates ⊛Can create calendar entries for birthdays, anniversaries and other events ⊛Unique solutions for a variety of common and rare tasks. You have special requirements? Then the app is likely your solution. ⊛New device? Switch from trial to full version? Simply export\backup your configuration and import it on the new device or the full version ⊛The app handles more contact/group data then other apps, an overview is given at http://ntbab.dyndns.org/apache2-default/seite/contactsync.html ⊛Multilingual: Supports English, German and partly French, Russian If you are interested in translating the app then simply send me a mail.
Interesting features for large-scale orders: ⊛Setup and configure your server connections through adb ⊛Licensing for large-scale orders
Permissions: You can find detailed information to the permissions at our website.
If you struggle with the configuration or need some assistance please contact me at consync@gmx.at. If you only add your questions to the comments I can hardly help you because I commonly need more information about your configuration and so on. I'm sure that I can help you to reach your goals and that I can provide the necessary support :)
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Comments on ContactSync - CardDAV and more for Android
★★★★★Torge Schmidt· Oct 8, 2015
Works well with my own Cardiac Server. Had some issues displaying birthdays of contacts, but it turned out to be a problem of the contact-app, not Contact Sync. The support of the creators is fast and helpful, therefore I give 5/5 Stars.
★★★★★A Google User· Mar 19, 2013
Great application Syncing my contacts with an owncloud installation. Had some problems at first, but the developer fixed them very quickly. Works like a charm! Great support!
★★★★★Kineta Chien· Nov 21, 2018
Excellent app and excellent support from the developer. Keeps my contacts in sync with my Card DAV server and works where similar apps failed.
★☆☆☆☆A Google user· Jan 27, 2016
I was trying to transfer my contacts, messages...etc. from my old Android 4.1.2 (Jellybean) to the new phone with Android 5.1 (Lollipop). I spent over six hours without success. When I sent email to the designated address: consync@gmx.at, the person who replied my email seemed to be a total stranger unrelated to the app developer. This is the worst app I have ever purchased and installed. It did not work and the whole experience was not user-friendly; it is a waste of time and money though it costs less than $3. I am asking for a refund. Reasons are as followed: (1) The instructions are cumbersome, confusing, with plenty of English spelling errors, and it seems that the developer was completing the app on the run without even considering of doing a spell check. (2) The installation steps were not well thought through, (3) The interface was poorly designed, too much computer jargon, and in lack of effective guidance to the consumers particularly people who are not IT savvy. I am not going to do anything with this developer except for a refund! I wish it is not a scam!
Google Play Rankings for ContactSync - CardDAV and more
This app is not ranked
Technologies used by ContactSync - CardDAV and more
ContactSync - CardDAV and more is requesting 28 permissions and is using 11 libraries.
Permissions
Development tools
test access to protected storage
Your personal information
read calendar events plus confidential information,
read your contacts,
add or modify calendar events and send email to guests without owners' knowledge,
modify your contacts
Each subscription will automatically renew 3 days before the expiration date for
the same time period. Subscriptions can be cancelled at any time before the renewal.