OX Sync App

OX Sync App brings OX App Suite’s calendar, contacts and task to your mobile.

OX Software GmbH · com.openexchange.mobile.syncapp.enterprise

Not rated yet 10K+ downloads v1.5.7 6.5 MB Android 6.0+ PEGI 3 · Everyone

Download APK 6.5 MB All versions

Signature matches the Google Play version Details

At a glance

Latest version: v1.5.7 (570)
Updated: Dec 1, 2025 (10 months ago)
APK size: 6.5 MB
Requires: Android 6.0+ (API 23)
CPU support: Any (no native code)
Category: Productivity (app)
Listed since: Oct 28, 2022 (at least)
Permissions: 26 (4 sensitive)
Website: open-xchange.com
Developer contact: [email protected]
Privacy: Developer's privacy policy

About this APK

OX Sync App is an app by OX Software GmbH in the Productivity category, listed since at least October 2022. It has no native code, so it runs on any Android processor.

It asks for 26 permissions, 4 of them sensitive, including read contacts, read calendar and write calendar. It asks for the same permissions as version 1.5.6.

What's new in v1.5.7

Small bugfixes

Description

From the listing uploaded by “appupdater”.

Please note: OX Sync app for Android will be discontinued from the 31st of December 2025. Please visit https://oxpedia.org/wiki/index.php?title=AppSuite:OX_Sync_App for alternative synchronization options. OX Sync App is an extension to OX App Suite and only works if you have a valid OX App Suite account. OX Sync App is a native mobile phone app built specifically for smartphone users of Android, that also have a valid OX App Suite account. The app is designed to let users sync their OX App Suite Appointments, Tasks and Contacts environment directly from a native mobile phone client. On the base of the implementation as sync adapter, it integrates seamlessly with the default Android calendar- and contacts apps. This app is brought to you by Open-Xchange. It is also available for white labeling and rebranding if required. Synchronization of Appointments and Tasks - Sync-Support of OX Task with the native task app - Sync-Support of OX Calendar with the native appointment app - Synchronization of OX Calendar Colors - Synchronize of all private, shared and public OX Calendar folder - Full support of recurring appointments, tasks and exceptions - Support of Time Zones which also be used in OX App Suite Synchronization of Contacts - Synchronization of Name, Title and Position - Synchronization of Website, Instant Messengers and contact information

Version history

3 versions are listed, going back to v1.5.4.

v1.5.7 LATEST Dec 1, 2025 6.5 MB TRUSTED v1.5.6 Sep 3, 2024 6.5 MB TRUSTED v1.5.4 Aug 21, 2024 6.2 MB TRUSTED

All 3 versions

Security & authenticity

Security rating: Trusted

Signing certificate

Signature matches the Google Play version Checked by the source store on Dec 1, 2025.
Certificate issued to “dmfs.org” This is the certificate of the Google Play version.
Same certificate as the 2 other versions checked

Store checks and file details

Developer signature verified Dec 1, 2025
Validated against Google Play Dec 1, 2025
Signed byCN=Marten Gajda, OU=dev, O=dmfs.org, L=Dresden, C=DE
Signing certificate (SHA-1)D4:58:E6:A4:D2:33:08:1B:21:10:D4:D9:70:93:2C:6A:51:F1:F9:96
File MD5746e4245aa4888a9864966c49f9421e5
Uploaded by “appupdater” Gold tier · 117,810 followers · uploading since 2020

Scans and ratings come from the source store; the certificate comparisons are AAPKs's own, made from the files' published signatures (2 other versions compared). AAPKs doesn't scan files itself — compare the MD5 and signer after downloading.

Permissions (26)

OX Sync App requests 26 permissions, 4 of them sensitive.

Read calendar Sensitive android.permission.READ_CALENDAR
Read contacts Sensitive android.permission.READ_CONTACTS
Write calendar Sensitive android.permission.WRITE_CALENDAR
Write contacts Sensitive android.permission.WRITE_CONTACTS
Alarm set alarm (custom) com.android.alarm.permission.SET_ALARM
Control vibration android.permission.VIBRATE
Dmfs read tasks (custom) org.dmfs.permission.READ_TASKS
Dmfs write tasks (custom) org.dmfs.permission.WRITE_TASKS
Enterprise read tasks (custom) com.openexchange.mobile.syncapp.enterprise.permission.READ_TASKS
Enterprise write tasks (custom) com.openexchange.mobile.syncapp.enterprise.permission.WRITE_TASKS
Foreground service data sync android.permission.FOREGROUND_SERVICE_DATA_SYNC
Full network access android.permission.INTERNET
Internal broadcast protection (app-defined) com.openexchange.mobile.syncapp.enterprise.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION
Manage accounts android.permission.MANAGE_ACCOUNTS
Prevent the device from sleeping android.permission.WAKE_LOCK
Push messaging (app-defined) com.openexchange.mobile.syncapp.enterprise.permission.C2D_MESSAGE
Read sync settings android.permission.READ_SYNC_SETTINGS
Read sync stats android.permission.READ_SYNC_STATS
Receive push notifications com.google.android.c2dm.permission.RECEIVE
Run at startup android.permission.RECEIVE_BOOT_COMPLETED
Run foreground services android.permission.FOREGROUND_SERVICE
Schedule exact alarms android.permission.SCHEDULE_EXACT_ALARM
Show notifications android.permission.POST_NOTIFICATIONS
Use credentials android.permission.USE_CREDENTIALS
View network connections android.permission.ACCESS_NETWORK_STATE
Write sync settings android.permission.WRITE_SYNC_SETTINGS

Required hardware & features

Basic touch input android.hardware.faketouch

OX Sync App APK: questions and answers

Can I install this APK over the version I already have?

Yes, if your installed copy is older. It is signed like the Google Play version, so Android installs it as an update and keeps your data.

Is the OX Sync App APK safe?

No one can promise that a file is safe, but some things can be checked. The source store rates this file Trusted. Its signature matches the Google Play version. It is signed with the same certificate as the 2 other versions checked. After downloading, check that the file's MD5 is 746e4245aa4888a9864966c49f9421e5.