DecSync CC is an open-source (GPL-3.0-only) Android app by Aldo Gunsing. The APK we host is 7.3 MB, it needs Android 5.0 or newer, and it declares 20 permissions.
The file on this page is DecSync CC 2.2.3, 7.30 MB, and it installs on Android 5.0 and newer.
We compared the signing certificate of this build with the certificate recorded the first time org.decsync.cc entered the site, and published both the file's SHA-256 and the certificate's fingerprint above so you can check the download yourself. That comparison says the file was not repackaged by someone else; it is not a review of what the app does.
The manifest inside the APK declares 20 permissions, including access to your contacts. Android asks you to approve those the first time the app needs them.
Its licence is GPL-3.0-only. We took this build from F-Droid, and the source for this exact version is linked below.
The most recent release upstream is from Jan 2, 2022, over 4 years ago. It still installs; it is simply not being updated.
We do not show a star rating or an install count for this page: we have no measured figure for either, and a number we cannot source is worth less than an empty field.
- Version
- 2.2.3
- Size
- 7.30 MB
- Requires Android
- API 21
- Package
- org.decsync.cc
- Signature checked on
- Sep 22, 2026
- Where this file came from
- F-Droid
- Licence
- GPL-3.0-only
- Source code
- Source for this version
File SHA-256: 38fd45a240fa59613fd41ef0f19e88fe1d15ff110166cd70bb2031cbd5741b1a
Signing certificate (SHA-256): 17fe076258eef2c8f74b413b979a097ae399037ddbecdee870fe71c11921c994
We check that this file carries the same signing certificate as earlier releases of the same package. That shows the APK was not repackaged by someone else — it is not a security review of the app.
Declared permissions
- READ_SYNC_STATS
- READ_SYNC_SETTINGS
- WRITE_SYNC_SETTINGS
- READ_CONTACTS
- WRITE_CONTACTS
- READ_CALENDAR
- WRITE_CALENDAR
- WRITE_EXTERNAL_STORAGE
- REQUEST_IGNORE_BATTERY_OPTIMIZATIONS
- AUTHENTICATE_ACCOUNTS
- GET_ACCOUNTS
- MANAGE_ACCOUNTS
- org.dmfs.permission.READ_TASKS
- org.dmfs.permission.WRITE_TASKS
- org.tasks.permission.READ_TASKS
- org.tasks.permission.WRITE_TASKS
- WAKE_LOCK
- ACCESS_NETWORK_STATE
- RECEIVE_BOOT_COMPLETED
- FOREGROUND_SERVICE
Screenshots


