EteSync - Secure Data Sync
Secure, private and end-to-end encrypted calendar, contacts and tasks sync
Tengu · com.etesync.syncadapter
UpdatedApr 21, 2026
PublishedDec 21, 2022
Packagecom.etesync.syncadapter
MD596a45938a706fb47acf7d68e357a2157
SHA1 (signer)17:81:42:8D:0A:12:E4:A2:0C:C2:28:D8:79:41:00:AF:E4:2A:78:46
Signed byCN=Tengu, OU=Software, O=Tengu, L=Tel-Aviv, ST=Israel, C=IL
Architecturesx86, x86-64, armeabi-v7a, arm64-v8a
Malware scanTRUSTED
Websitehttps://www.etesync.com
Contact[email protected]
Privacy policyView
What's new
* Remove unused READ_MEDIA_IMAGES permission.
* Fix build with latest Android SDKs
* Bump target SDK
* Fix build with latest Android SDKs
* Bump target SDK
Description
Secure, end-to-end encrypted, and privacy respecting sync for your contacts, calendars, and tasks (using Tasks.org and OpenTasks). For notes, please use the EteSync Notes application.
In order to use this application you need to have an account with EteSync (paid hosting), or run your own instance (free and open source). Check out https://www.etesync.com/ for more information.
Easy to Use
===========
EteSync is very easy to use. It seamlessly integrates with Android so you won't even notice you are using it. Security doesn't always have to come at a cost.
Secure & Open
============
Thanks to zero-knowledge end-to-end encryption, not even we can see your data. Don't believe us? You shouldn't, just verify yourself, both the client and server are open source.
Full History
=========
A full history of your data is saved in an encrypted tamper-proof journal which means you can review, replay and revert any changes you have made at any point in time.
How does it work?
===============
EteSync integrates seamlessly with your existing apps. All you need to do is sign up (or run your own instance), install the app, and enter your password. After that, you will be able to save your contacts, calendar events and tasks to EteSync using your existing Android apps, and EteSync will transparently encrypt your data and update the change journal in the background. More security, same work-flow.
In order to use this application you need to have an account with EteSync (paid hosting), or run your own instance (free and open source). Check out https://www.etesync.com/ for more information.
Easy to Use
===========
EteSync is very easy to use. It seamlessly integrates with Android so you won't even notice you are using it. Security doesn't always have to come at a cost.
Secure & Open
============
Thanks to zero-knowledge end-to-end encryption, not even we can see your data. Don't believe us? You shouldn't, just verify yourself, both the client and server are open source.
Full History
=========
A full history of your data is saved in an encrypted tamper-proof journal which means you can review, replay and revert any changes you have made at any point in time.
How does it work?
===============
EteSync integrates seamlessly with your existing apps. All you need to do is sign up (or run your own instance), install the app, and enter your password. After that, you will be able to save your contacts, calendar events and tasks to EteSync using your existing Android apps, and EteSync will transparently encrypt your data and update the change journal in the background. More security, same work-flow.
Required features
- Faketouch android.hardware.faketouch
- Wifi android.hardware.wifi
Permissions (16)
EteSync - Secure Data Sync requests the following Android permissions:
- Access Network State android.permission.ACCESS_NETWORK_STATE
- Access Wifi State android.permission.ACCESS_WIFI_STATE
- Internet android.permission.INTERNET
- Post Notifications android.permission.POST_NOTIFICATIONS
- Read Calendar android.permission.READ_CALENDAR
- Read Contacts android.permission.READ_CONTACTS
- Read Sync Settings android.permission.READ_SYNC_SETTINGS
- Read Sync Stats android.permission.READ_SYNC_STATS
- Request Ignore Battery Optimizations android.permission.REQUEST_IGNORE_BATTERY_OPTIMIZATIONS
- Write Calendar android.permission.WRITE_CALENDAR
- Write Contacts android.permission.WRITE_CONTACTS
- Write Sync Settings android.permission.WRITE_SYNC_SETTINGS
- Org Dmfs Permission Read Tasks org.dmfs.permission.READ_TASKS
- Org Dmfs Permission Write Tasks org.dmfs.permission.WRITE_TASKS
- Org Tasks Permission Read Tasks org.tasks.permission.READ_TASKS
- Org Tasks Permission Write Tasks org.tasks.permission.WRITE_TASKS
