Koofr Vault

F-Droid Open Source | Cloud Storage & File Sync

4 Downloads 13 Views v0.1 66.38 MB 4.1+

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(66.38 MB)

Editor's Overview

Koofr Vault is a cloud storage & file sync application developed by F-Droid Open Source, packaged as a single Android APK of version 0.1 weighing in at 66.38 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

Only download through the button on this page — never from third-party mirrors or shortened links, which are the most common way malware spreads.
File size is a light 66.38 MB, so it installs quickly even on modest connections.
This build is signed by "F-Droid Open Source" — always verify the developer name matches what's listed on the app's official store page before installing an update.
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.
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

Koofr Vault is an open source, client-side, zero-knowledge encrypted storage application by Koofr. Unlock enhanced security for your files. Discover a better way to securely store and access your photos, videos and documents.

Included in all Koofr plans, even in the free one.

Start using Koofr Vault now to make your life more secure. First time users must create a free Koofr account. Access everything through the Koofr Vault mobile app for Android.

With Koofr Vault for Android you can:

• create new Safe Boxes,
• upload files or folders to your Safe Boxes,
• download your files to your phone or open them in different apps,
• take a photo and store it in your Safe Box,
• use biometrics to unlock Safe Boxes.

All Safe Box files are encrypted or decrypted by your device on demand as you access them.

Since your Safe Key, only known to you, is required to decrypt cloud content, only you can access the files.

Neither your Safe key nor any other unencrypted file data or metadata is sent to or stored by Koofr.

The cloud has never been safer!

Need help? Contact our support team at support@koofr.net.

Details

Version	v0.1
Size	66.38 MB
Developer	F-Droid Open Source
Category	Cloud Storage & File Sync
Package	net.koofr.vault
Android	4.1+
Last Updated	Oct 29, 2026
Downloads	4

Frequently Asked Questions

Is Koofr Vault 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 Koofr Vault require?
Android 4.1+ or newer. Installing on older devices may cause crashes or refuse to install.

Is Koofr Vault safe to install?
We link to the exact APK published by F-Droid Open Source. 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 Koofr Vault?
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 Koofr Vault

Tap the Download APK button above and save the file to your device.
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.
Open the downloaded net.koofr.vault.apk file from your Downloads folder.
Tap Install and wait for Android to finish.
Open «Koofr Vault» by F-Droid Open Source and grant only the permissions it actually needs.
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.