Sync contacts, calendars and tasks without a server using DecSync
About this app
DecSync CC synchronizes contacts, calendars and tasks using DecSync. It stores this data in a shared directory, using Syncthing, Google Drive, Dropbox or any other file synchronization service.
Syncthing synchronizes files directly between devices, without storing the data centrally or requiring a server. DecSync CC works with any file synchronization service, but using Syncthing is recommended as your data stays on your devices.
The UI is based on the one used in DAVx⁵.
Licensed under GPL-3.0-only, by Aldo Gunsing.
What's New in v2.2.3
Imported from the F-Droid repository index.
- - Fix migration after upgrade (#79)
- - Fix rare crash when viewing the entries count
- - Fix navigation logo
Version history
Jan 2, 2022 · 7.3 MB · Android API 21–31 · code 35
Imported from the F-Droid repository index.
- - Fix migration after upgrade (#79)
- - Fix rare crash when viewing the entries count
- - Fix navigation logo
SHA-256 38fd45a240fa59613fd41ef0f19e88fe1d15ff110166cd70bb2031cbd5741b1a
Dec 30, 2021 · 7.3 MB · Android API 21–31 · code 33
Imported from the F-Droid repository index.
- Fix potential background crash after upgrade
SHA-256 5a39de241f900579727c4cf4f5c6015912eca04de1cd8325539ae56e58ef207e
Dec 28, 2021 · 7.3 MB · Android API 21–31 · code 32
Imported from the F-Droid repository index.
- - Add support for multiple DecSync directories (#56)
- - Add support for importing existing accounts
- - Change sync interval from 60 to 15 minutes (#53)
- - Improve the introduction
- - Don't crash on reading an empty file (#68)
SHA-256 58bbaabd5c0375d6549bf2f9b54e7fcaef0ff398f669120199240af47b953092
Will it run on your device?
73%
- Runs on a broad range of modern Android versions.
- ABI coverage is focused on newer 64-bit devices.
Installation Guide
Open Settings on your Android device
Go to Security → Unknown sources (or Install unknown apps)
Enable "Allow from this source" for your browser or file manager
Open the downloaded APK file from your Downloads folder
Tap "Install" and wait for installation to complete
Launch the app from your home screen
Make sure to re-enable Unknown Sources restrictions after installation for security.
How to install this safely
How to verify the file you downloaded
Before you install anything, confirm the file is the one described here. On a computer, run shasum -a 256 your-download.apk (macOS or Linux) or certutil -hashfile your-download.apk SHA256 (Windows), then compare the output character-for-character with the SHA-256 on this page. If a single character differs, the file is not the build we recorded — delete it.
What the signing certificate proves
Every Android app is signed with a private key that only its developer holds. The fingerprint on this page is a hash of the matching public certificate, and it proves continuity rather than identity: it tells you a build came from whoever signed the earlier ones. Android enforces this at install time — if a package claiming to be org.decsync.cc is signed with a different key, the system will refuse to install it over your existing copy. A fingerprint that changes between releases is worth pausing on, because a repackaged app that has been modified by someone else cannot keep the original signature.
How to roll back to an earlier version
If the current release misbehaves, 2.2.1 is the last build before it. Android will not install an older version code over a newer one, so you must uninstall DecSync CC first — which clears its local data unless you have a backup. Reinstall the older APK only if its signing fingerprint matches the build you already trust, and check the API range: an older release may target an Android version your device has moved past.
Why we list sources instead of hosting everything
The official store channel is almost always the right choice: it updates automatically and carries the publisher's own distribution guarantees. A direct APK is useful when a device has no store access, when a rollout has not reached your region, or when you need a specific version — and only when the publisher has authorized that copy. APKBrowse does not list pirated, cracked, or unauthorized rebuilds of DecSync CC, and a listing is removed when the evidence for it stops holding up.
Get DecSync CC
Every source we list for org.decsync.cc is legality-reviewed. Pirated or cracked builds are never offered.
Other sources
F-Droid listing
officialF-Droid builds this app from source and signs it. This is its official listing, with older builds and full release notes.
Source code
verified publisherThe upstream repository this build is compiled from.
We check legality and signature continuity, but device behaviour still varies. Install at your own discretion.
App Information
Security Verification
We record provenance; we do not run malware scans. Verify the hash yourself before installing.
SHA-256 Hash
38fd45a240fa59613fd41ef0f19e88fe1d15ff110166cd70bb2031cbd5741b1a
Signing certificate
17fe076258eef2c8f74b413b979a097ae399037ddbecdee870fe71c11921c994
Permissions Required
Previous Versions
The signing certificate fingerprint for this release is on record, so a build that does not match it did not come from this publisher.
Report a problem with this listing
A listing is only as good as its corrections. If a source is broken, a signature looks wrong, or this app should not be here, tell the moderation team.