Cozy Safe

A private vault for your notes, documents and photos.

Everything is encrypted on your device before it is saved or synced. Without your password, nobody can open it, including us.

Download

Free and open source. For macOS, Windows, Linux and Android; iPhone is coming soon.

  • macOS
  • Windows
  • Linux
  • Android
  • iPhone
The desktop app in dark mode.
The Cozy Safe unlock screen on a phone

This is an early preview. You can create, unlock and lock vaults. Notes, files, photos and sync arrive in later releases, so don't keep the only copy of anything important here yet.

On your phone and your computer

The same app on every device, in light or dark to match your system.

Creating a vault: the password must be strong before you can continue.
Creating a vault: the password must be strong before you can continue.
On a computer: one password field, no list of vaults.
On a computer: one password field, no list of vaults.

How Cozy Safe keeps you safe

Encrypted on your device

Data is encrypted before it reaches the disk or a cloud folder. Sync only ever sends encrypted data.

Password plus Secret Key

Your password is combined with a random 128-bit key kept on your device, so someone holding a copy of your vault still cannot guess the password.

Open source

Anyone can read and check the code (GPL-3.0). Installers are built by GitHub, with provenance you can verify.

Good to know first

There is no recovery

  • If you forget the password, nobody can open the vault again, including us.
  • Choose a password you will remember, such as a phrase of several words.

What it cannot do

  • It cannot protect a device that already has malware.
  • Others can still see that Cozy Safe is installed.
  • Anyone who knows the password can open the vault.

Download

PlatformFileHow to install
macOSCozySafe-macos.dmgSigned and notarized by Apple. Open the disk image and drag Cozy Safe into Applications.
WindowsCozySafe-windows-x64.zipNot signed yet. Unzip it and run cozysafe.exe. If SmartScreen warns you, choose More info, then Run anyway.
LinuxCozySafe-linux-x64.tar.gzExtract it and run ./cozysafe. Needs GTK 3.
AndroidCozySafe-android.apkSigned with the Cozy Pi release key. When Android asks, allow your browser to install apps.
iPhoneComing soonThrough TestFlight, Apple's app for testing new apps.

To check a download, compare it with SHA256SUMS.txt or run gh attestation verify <file> -R cozy-pi/cozysafe. Older versions are on the releases page.