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EteSync - Secure Data Sync

Secure, end-to-end encrypted, and privacy respecting sync for your contacts, calendars and tasks (Android client).

Get it on Google Play Get it on F-Droid

GitHub tag Chat with us


Please see the EteSync website for more information.

EteSync is licensed under the GPLv3 License.


EteSync uses git-submodules, so cloning the code requires slightly different commands.

  1. Clone the repo: git clone --recurse-submodules etesync-android
  2. Change to the directory cd etesync-android
  3. Open with Android studio or build with gradle:
  4. Android studio (easier): android-studio .
  5. Gradle: ./gradlew assembleDebug

To update the code to the latest version, run: git pull --rebase --recurse-submodules


Translators are highly welcome! To help with translation please go to our Weblate page and translate it from there.

Third Party Code

EteSync's source code was originally based on DAVdroid but the codebases has since diverged quite significantly.

This project relies on many great third party libraries. Please take a look at the app's about menu for more information about them and their licenses.