seQRets
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Coming SoonThe seQRets desktop app — maximum security for your most valuable secrets.
The seQRets web app uses the best available technology to safely secure your most important data. But browser-based apps DO have weaknesses that no amount of preparation and testing can fully fix:
Browser Extensions
Malicious browser extensions can secretly watch what you type and steal what you copy. No website can stop them.
Browser Memory
Your password leaves a faint trace in your browser's memory that we can't fully wipe. The trace lingers until you close the tab — sometimes longer.
Code Delivery
When you first visit, or update, the seQRets web app, your browser downloads fresh code via Cloudflare. In theory, that code could be tampered with — a threat known as a supply chain attack.
The seQRets Desktop App eliminates all three threats.
| Feature | Web | Desktop |
|---|---|---|
| XChaCha20-Poly1305 encryption | ||
| Shamir's Secret Sharing | ||
| Argon2id password hashing | ||
| Optional keyfile (second factor) | ||
| Built-in 209-bit password generator | ||
| BIP-39 seed phrase support | ||
| Inheritance Plan (file upload) | ||
| Camera QR scanning | ||
| Works offline after load | ||
| Inheritance Plan (in-app builder) | ||
| JavaCard smart card support | ||
| Visible Qard integrity verification | ||
| Printed SHA-256 fingerprint on every Qard | ||
| Encryption runs outside the browser | ||
| Securely erases keys from memory | ||
| Safe from malicious browser add-ons | ||
| Cryptographically signed install file | ||
| Automatic updates |
Inheritance Plan builder — a guided 9-section form covering everything your heirs need, encrypted to a file that fits on a smart card.
JavaCard smart card support — store Qards, vaults, and plans on a physical smart card with PIN protection. Same chip used in EMV credit cards and ePassports.
Encryption runs natively — encryption happens outside the browser. Your password and keys never enter browser memory and are erased the moment they're done.
Clone card & Smart Card Manager — manage PINs, copy between readers, delete items, and factory-reset cards from one page.