EteSync - Secure Data Sync

2.6.0

Tengu

4.35

407 reviews

10,000+
Downloads

Free

Secure, private and end-to-end encrypted calendar, contacts and tasks sync

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About EteSync - Secure Data Sync

EteSync - Secure Data Sync is a tools app developed by Tengu.

Download Statistics

EteSync - Secure Data Sync has been downloaded 48 thousand times. In the last 30 days, the app was downloaded 700 times.

User Ratings

EteSync - Secure Data Sync is rated 4.35 out of 5 stars. The rating is based on 410 ratings.

App Information

EteSync - Secure Data Sync is FREE to download. The APK download size is 11.21 MB. The latest version available is 2.6.0. The last update was on October 18, 2025.

Technical Requirements

EteSync - Secure Data Sync requires Android 5.0+ or higher. The app has a content rating of Everyone. The app has been available on Google Play February 2017.

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.

More data about EteSync - Secure Data Sync

Price	Free to download
Total downloads	48 thousand
Recent downloads	700
Rating	4.35 based on 410 ratings
Ranking	Not ranked
Version	2.6.0
APK size	11.2 MB
Number of libraries	32
Designed for Android	5.0+
Suitable for	Everyone
Ads	NO ads

App Performance Report

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Alternative downloads for the EteSync - Secure Data Sync app

EteSync - Secure Data Sync compared with similar apps

Common keywords of similar apps

Etesync Tasks Application Run Instance Easy Seamlessly Integrates Full History Journal Work Existing End Secure Data Sync Encrypted Contacts Open Calendar Notes Source Security Apps

Keywords missing from this app

Files App Cloud Access Privacy Free Encryption Private Devices Device Features Storage Transfer Tuta Share Https Offline Smart Note Safe Sharing Outlook File Strong Tracking Switch Time Recent Support Securely Code Lockbook Phone Send Internxt Calendars Users Email

Google Play Rating history and histogram

310

Downloads over time

EteSync - Secure Data Sync has been downloaded 48 thousand times. Over the past 30 days, it averaged 23 downloads per day.

Changelog of EteSync - Secure Data Sync

Show changelog

Developer information for Tengu

Tengu

android@etesync.com

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Comments on EteSync - Secure Data Sync for Android

★★★★★ Ryan Sipes · Sep 29, 2020

EteSync is a great tool in an age of mass surveillance by both governments and corporations. It puts the power of privacy back in the hands of the user, whilst making it easy to manage contacts, calendars, and tasks through existing popular apps - but with an encrypted backend. All around an amazing app.

★★★★★ Mykola Grybyk · May 7, 2024

I love the app. It works like a charm. I'm using it as an alternative to google calendar and contacts. Dear developers, thank you so much. I wish you all the best, please keep the product running! Cheers!

★☆☆☆☆ Caballero Martinez · May 8, 2024

Broken. Successfully used it for the two free weeks. After that I subscribed and paid for a yearly plan, but my account continued to be inactive and unpaid for over a week? Contacted support via email, they say payment is still broken???? Had to move all my data back out of etesync, what a waste of time :(

★☆☆☆☆ Igor Cryptor · Dec 18, 2023

Their service is unavailable for more than 1 day already. It's impossible to login as well. Support does not respond

★★☆☆☆ Liam Randall · Aug 24, 2023

Rapid summary: service does not recognize non-mainstream (Google, Apple) calendars and contact books - won't sync. File-based syncing cannot be automated. Doesn't seem to be any data recovery functionality. How are you supposed to get your saved data on your recovery device?? App won't parse .ics files if they're too big. The app has long roads to get to being useful.

★★☆☆☆ Damian Królik · Dec 31, 2021

Maybe I just wasn't patient enough, but I just needed a simple app for notes sharing, and I couldn't make it work with EteSync Notes - e.g. I don't understand how collections in EteSync are related to task lists in EteSync Notes, but they are not in sync. Perhaps it is just my ignorance, but I expect a more intuitive workflow for such a simple job.

Google Play Rankings for EteSync - Secure Data Sync

This app is not ranked

Technologies used by EteSync - Secure Data Sync

EteSync - Secure Data Sync is requesting 17 permissions and is using 32 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

Network communication

view network connections, view Wi-Fi connections, full network access

System tools

read sync settings, read sync statistics, toggle sync on and off

Extra

android.permission.POST_NOTIFICATIONS, android.permission.REQUEST_IGNORE_BATTERY_OPTIMIZATIONS, org.dmfs.permission.READ_TASKS, org.dmfs.permission.WRITE_TASKS, org.tasks.permission.READ_TASKS, org.tasks.permission.WRITE_TASKS

Ad network libraries

None found

Social libraries

None found

Development tools

Android Jetpack core

Android Architecture Components

Android Jetpack VersionedParcelable Android Jetpack Annotations Android Library Icon

Android Jetpack Annotations Android Jetpack Widgets Android Library Icon

Android Jetpack Widgets Android Jetpack AppCompat Android Library Icon

Android Jetpack AppCompat AndroidX Activity Android Library Icon

AndroidX Activity Android Activity Saved State Android Library Icon

Android Activity Saved State AndroidX Loader Android Library Icon

AndroidX Loader

Android Transition Support Library Kotlin Android Library Icon

Kotlin

Android Support Library collections

Android Support VectorDrawable AndroidX App Startup Android Library Icon

AndroidX App Startup AndroidX Cursor Adapter Android Library Icon

AndroidX Cursor Adapter Google gson Android Library Icon

Google gson Okio Android Library Icon

Okio

AndroidX Concurrent Futures AndroidX Tracing Android Library Icon

AndroidX Tracing AndroidX ProfileInstaller Android Library Icon

AndroidX ProfileInstaller AndroidX Preference Android Library Icon

AndroidX Preference Android View Binding Android Library Icon

Android View Binding Android Data Binding Android Library Icon

Android Data Binding

Simple Logging Facade for Java (SLF4J) Android Library Icon

Simple Logging Facade for Java (SLF4J) Apache Commons I/O Android Library Icon

Apache Commons I/O Apache Commons Codec Android Library Icon

Apache Commons Codec

Spongy Castle - Bouncy Castle for Android Android Library Icon

Spongy Castle - Bouncy Castle for Android Conscrypt Android Library Icon

Conscrypt

ACRA

JavaMail

ExpandableLayout Android Color Picker Android Library Icon

Android Color Picker

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