PeopleSync CardDAV Client

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About this app

PeopleSync Client

The PeopleSync Client app is an Android CardDAV client for businesses. The app synchronizes address lists and contacts from the messageconcept PeopleSync server software.

The contacts will be synchronized to the default contact store on your Android device and will be accessible from the default contacts app and your favorite 3rd party apps.

The app was built for business usage and central administration through the IT staff. In a typical usage scenario the address lists to sync by a certain user are provisioned on server side. The app will always sync all address lists, available on the server.

If you are not using PeopleSync Server, we recommend DAVx⁵ from bitfire web engineering or other free or commercial apps.

On iOS devices CardDAV is supported by the native operating system. The PeopleSync Client covers this gap in Android.

PeopleSync Server

What does PeopleSync do?

Mobile devices, like smartphones and tablets, synchronize your personal address lists by default. But mobile devices are capable of synchronizing folders in your personal mailbox only. Therefore your company’s address books are missing on your smartphones and tablet computers. messageconcept PeopleSync acts as a directory connector for mobile devices. The address list server synchronizes the company’s address lists automatically with your smartphones, tablets and applications. PeopleSync comes with synchronization agents for enterprise sources such as Microsoft Active Directory, Exchange Server, SharePoint, Office 365, LDAP directories, SQL databases and CRM systems. The software works via the CardDAV standard and is therefore compatible with all major mobile device platforms.

Why do we need PeopleSync?

Smartphone users need the contact details of their coworkers, customers and other business partners while using their mobile devices on the road or even in the office. Offline synchronization of company’s databases is not available for mobile devices by default. Microsoft Exchange ActiveSync and similar protocols synchronize each user’s personal contacts only.

With synchronized contact data mobile devices are able to resolve caller IDs when receiving a call or when displaying the missed calls lists. Additionally with PeopleSync, users are always able to dial a number from their phone’s address books, because they have all data right on hand. PeopleSync optimizes the productivity of your knowledge workers and your sales staff by providing enterprise address data on all devices.

Find more information about the messageconcept PeopleSync Server at

App Support

Please contact us via @messageconcept ( if you have questions regarding our app. Support by phone and email will be provided to existing customers of our PeopleSync server software. Please be so kind to accept this policy, as we provide the app free of charge.


The PeopleSync Client App is licensed under the GPLv3 License. Please find the source code as well as a link to the license conditions at
Updated on
Sep 26, 2023

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
No data shared with third parties
Learn more about how developers declare sharing
This app may collect these data types
Personal info and Contacts
Data is encrypted in transit
Data can’t be deleted

What's new

• NOTE: this will be the last release with support for direct upgrades from PeopleSyncClient 0.5
• small improvements and bug fixes
• library updates