(SECUSO) Backup Application for Privacy Friendly Apps
About this app
Privacy Friendly Backup is an application that works with other privacy friendly apps to enable backups. The app allows you to create and manage backups. This includes importing backups into the app and exporting backups to external storage media. The Privacy Friendly Backup app communicates with other Privacy Friendly apps and extracts or injects data into and out of the app to enable the creation and restoration of backups.
The app provides encryption via an interface to another app that provides encryption as functionality via the openpgp-api. The user is free to choose their own encryption provider via the app's settings. For encryption to work, the provider must be installed externally. We recommend https://www.openkeychain.org/ , as this app is available in the regular PlayStore as well as in the F-Droid Store and is completely open source.
You can reach us via Bluesky - @secusoresearch.bsky.social https://bsky.app/profile/secusoresearch.bsky.social Mastodon - @SECUSO_Research@bawü.social https://xn--baw-joa.social/@SECUSO_Research/ Job opening - https://secuso.aifb.kit.edu/english/Job_Offers.php
Licensed under GPL-3.0-or-later, by SECUSO - Security Usability Society.
What's New in v1.4.0
Imported from the F-Droid repository index.
Version history
Jun 20, 2026 · 8.5 MB · Android API 21–34 · code 10
Imported from the F-Droid repository index.
SHA-256 fdd02448f5f8a6271553b2d7a8ed406dc5d48c7ad33de51138d240ee78825d1f
Dec 9, 2024 · 6.5 MB · Android API 21–34 · code 8
Imported from the F-Droid repository index.
SHA-256 a2da9ba66f0fa76469a16dc369579d2afa22a7c33309736f51a8356e90a40d5b
Nov 15, 2024 · 6.5 MB · Android API 21–34 · code 7
Imported from the F-Droid repository index.
SHA-256 1ea431f2cbf41bfe46093fe78588b129ca25cb292864a5849666d6890d84248e
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.secuso.privacyfriendlybackup 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, 1.3.4 is the last build before it. Android will not install an older version code over a newer one, so you must uninstall Backup (Privacy Friendly) 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 Backup (Privacy Friendly), and a listing is removed when the evidence for it stops holding up.
Get Backup (Privacy Friendly)
Every source we list for org.secuso.privacyfriendlybackup 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
fdd02448f5f8a6271553b2d7a8ed406dc5d48c7ad33de51138d240ee78825d1f
Signing certificate
a7217a62124d9c4940a6a7bc3568360da35104c0bf3fbaf55ee88908e06d5992
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.