Privacy policy
Last updated November 12, 2026
PassCub is a password manager made so that nobody but you can read your passwords, including us. This policy covers the PassCub app for Windows, the PassCub browser extensions, the PassCub sync relay and this website.
What stays on your devices
Your vault, meaning your logins, notes and everything in them, is encrypted on your device before it is stored or synced. The keys that open it come from your master password and a key kept by your device's operating system, and they never leave your devices in a readable form.
The PassCub browser extension
The extension sends the address of the page you're on, and the username and password you choose to save, only to the PassCub app on the same computer. It sends nothing to us or to any other server, and it stores nothing itself.
Sync
If you turn on sync, your devices exchange encrypted data through the PassCub relay. The relay stores that data and passes it on. It cannot decrypt it, and it does not receive your name, email address, master password or keys. To deliver data it necessarily sees your device's IP address and the size and timing of what is sent; it does not log IP addresses. You can run your own relay instead.
Importing from another password manager
When you import an export file from LastPass, Bitwarden or another password manager, the PassCub app reads it on your computer. The file is never uploaded. After the import, PassCub offers to delete the file, since it holds your passwords in plain text.
Updates
The app checks GitHub for signed updates. GitHub receives that request like any download.
This website
passcub.com uses no cookies, analytics, advertising or trackers. It is hosted by Cloudflare, which handles each request as any web host does, including your IP address, to deliver the site and protect it from attacks.
What we don't do
No accounts, no analytics, no advertising, no tracking and no sale of any data.
Changes
If this policy changes, the new version will be posted on this page with a new date.
Contact
Questions about privacy: support@passcub.com