# Flock, Private Contact and Calendar Cloud Sync.

DevFeed: [Flock, Private Contact and Calendar Cloud Sync.](<https://devfeed.tech/articles/flock-private-contact-and-calendar-cloud-sync-1762.md>)

Original publisher: [Read original article](<https://signal.org/blog/flock/>)

Published: 2014-07-21T00:00:00Z

Content type: article

Language: en

Sources: [Signal Blog](<https://devfeed.tech/sources/signal-blog.md>)

Topics: [Cloud](<https://devfeed.tech/topics/cloud.md>), [data](<https://devfeed.tech/topics/data.md>), [Android](<https://devfeed.tech/topics/android.md>), [Security](<https://devfeed.tech/topics/security.md>), [passwords](<https://devfeed.tech/topics/passwords.md>), [Open Source](<https://devfeed.tech/topics/open-source.md>), [Mobile](<https://devfeed.tech/topics/mobile.md>), [Bitcoin](<https://devfeed.tech/topics/bitcoin.md>)

Tags: [android](<https://devfeed.tech/tags/android.md>), [bitcoin](<https://devfeed.tech/tags/bitcoin.md>), [cloud](<https://devfeed.tech/tags/cloud.md>), [data](<https://devfeed.tech/tags/data.md>), [mobile](<https://devfeed.tech/tags/mobile.md>), [open-source](<https://devfeed.tech/tags/open-source.md>), [open-source-security](<https://devfeed.tech/tags/open-source-security.md>), [password](<https://devfeed.tech/tags/password.md>), [privacy](<https://devfeed.tech/tags/privacy.md>), [private-cloud](<https://devfeed.tech/tags/private-cloud.md>), [security](<https://devfeed.tech/tags/security.md>)

## AI overview

Flock is a private cloud synchronization service for Android that encrypts contacts and calendar data before it leaves the device. It supports password-based access, a paid hosted service, self-hosting, Bitcoin payments, and open-source development, with encrypted photo and video backup and desktop integration planned.

## Source excerpt

At Open Whisper Systems, we believe users should have both privacy and powerful services. Today we're releasing Flock, a private cloud sync service for your personal data. Your contacts and calendars belong to you. So does your privacy. Flock makes it possible to have both. Read more...