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Backup (Privacy Friendly)

Backup (Privacy Friendly)

SECUSO - Security Usability Society  |  System

5 Downloads 15 Views v1.3 6.46 MB 4.1+
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 (6.46 MB)

Editor's Overview

Backup (Privacy Friendly) is a system application developed by SECUSO - Security Usability Society, packaged as a single Android APK of version 1.3 weighing in at 6.46 MB. The package targets Android 4.1+ and above. Below you'll find the publisher's own description, a quick spec sheet, and a short buyer-beware checklist so you know exactly what you're installing before tapping download.

Install Checklist

  1. Only download through the button on this page — never from third-party mirrors or shortened links, which are the most common way malware spreads.
  2. File size is a light 6.46 MB, so it installs quickly even on modest connections.
  3. This build is signed by "SECUSO - Security Usability Society" — always verify the developer name matches what's listed on the app's official store page before installing an update.
  4. After install, Android may prompt you to allow "Install from unknown sources" — approve only this one install, then revoke the permission in Settings > Apps > Special access.
  5. We link directly to the APK file or the publisher's repository; we do not modify the binary. Always run a virus scan after any sideloaded install.

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

Details

Versionv1.3
Size6.46 MB
DeveloperSECUSO - Security Usability Society
CategorySystem
Packageorg.secuso.privacyfriendlybackup
Android4.1+
Last UpdatedOct 29, 2026
Downloads5

Frequently Asked Questions

Is Backup (Privacy Friendly) free to download?
Yes. The APK file linked from this page is free. The developer may offer in-app purchases once installed, but obtaining the installer itself costs nothing.

What Android version does Backup (Privacy Friendly) require?
Android 4.1+ or newer. Installing on older devices may cause crashes or refuse to install.

Is Backup (Privacy Friendly) safe to install?
We link to the exact APK published by SECUSO - Security Usability Society. We do not modify the file. Still, as with any sideloaded app, scan it with a reputable antivirus before opening it, and only grant permissions the app genuinely needs.

How do I update Backup (Privacy Friendly)?
Install the newer version on top of the old one — Android will keep your data. If the signature differs, uninstall first (you may lose local progress).

Why is the app not installing?
Common causes: not enough storage, an older Android version than 4.1+, or a conflicting build already installed. Free up space, check your OS version, and uninstall any previous copy before retrying.

How to Download & Install Backup (Privacy Friendly)

  1. Tap the Download APK button above and save the file to your device.
  2. Open your device Settings → Security (or Apps → Special access → Install unknown apps) and allow your file manager or browser to install unknown apps for this one file only.
  3. Open the downloaded org.secuso.privacyfriendlybackup.apk file from your Downloads folder.
  4. Tap Install and wait for Android to finish.
  5. Open «Backup (Privacy Friendly)» by SECUSO - Security Usability Society and grant only the permissions it actually needs.
  6. Revoke the "unknown sources" permission once you are done installing.

Note: this page hosts or links to the installer only. The application name, icon and description are provided for identification. All trademarks belong to their respective owners.