seQRets logo

Protect What Matters.

Protect yourseed phrases

Encrypt your secrets, split them into QR-coded shares, and distribute them to the people you trust. No servers. No accounts. No KYC. Nothing leaves your device.

Free web app — or goPro Desktopwith smart cards and inheritance planning.

Try the Free Web App

How It Works

Three Steps to
Unbreakable Security

You have secrets that would be devastating to lose — and dangerous in the wrong hands. seQRets ensures no single point of failure can compromise them.

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Step 1

Secure

Your secret is locked with military-grade, XChaCha20-Poly1305, encryption before anything else happens.

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Step 2

Split

The encrypted data is then split into pieces called shares using Shamir's Secret Sharing. You choose the number and the threshold to recover.

Step 3

Share

Print each share as a Qard — a scannable QR code — and store them in different locations or with trusted people.

Example

Split your Bitcoin seed phrase into 5 Qards. Give 2 to family, put 1 in a safe deposit box, keep 2 at home. Any 3 can reconstruct the original — but no attacker, lawyer, or single heir can access it alone.

Features

Built for What You
Can't Afford to Lose

BIP-39 Optimized

Purpose-built for cryptocurrency seed phrases and private keys. Validates BIP-39 mnemonics and checksums automatically.

Secure Any Secret

Not just crypto. Passwords, API keys, legal documents, account credentials — if it's sensitive, seQRets can encrypt and split it.

Inheritance Planning

Inheritance Planning

Distribute shares to trusted family or advisors. Document multiple secrets, assign assets to beneficiaries, plan for incapacitation, and get automated review reminders.

Pro · Desktop
seQRets NFC smart card

Smart Card Support

Store shares on NFC-enabled smart cards for durable, tamper-evident physical security.

Pro · Desktop

QR-Coded Shares

Each share becomes a scannable QR code (Qard) for easy physical storage and recovery.

Bob — AI Assistant

Built-in AI guide that helps you understand security concepts and plan your secret management strategy.

Security Architecture

No Single Point
of Failure

No single lost backup, stolen share, or compromised location can expose your secrets. Everything is encrypted before it's split — and no one person holds enough to unlock anything alone.

seQRets cryptographic source code showing Argon2id, XChaCha20, and Shamir's Secret Sharing

Argon2id

Memory-hard key derivation resistant to GPU/ASIC attacks

XChaCha20-Poly1305

Authenticated encryption with extended nonces for maximum security

Shamir's Secret Sharing

Information-theoretically secure threshold scheme — mathematically unbreakable

Quantum Resistant

Shamir's scheme is information-theoretically secure — no quantum computer can break it.

Zero Knowledge

Your secrets never leave your device. No servers, no cloud, no tracking.

Desktop App

Ready to
Go Pro?

seQRets Dark Theme
seQRets Light Theme
Coming Soon

Everything in the web app, plus smartcard integration, an in-app inheritance plan builder, code signing, and automatic updates — built natively with Rust and Tauri.

Verified & trusted — installs cleanly on Mac, Windows & Linux
Always up to date — security patches delivered automatically
Tap to back up — store secrets on tamper-proof smart cards
Printed SHA fingerprint on every Qard — verifiable against your records without scanning
Everything in the box — smart card & USB reader shipped to you

One-time purchase. No subscription. Yours forever.

A code-signed desktop app with automatic updates, NFC smart card support, and a portable USB reader — all included. The source code is always free under AGPLv3.

Build from Source

Compare

Free Forever.
Or Go Pro.

Feature
Web AppFree
Desktop AppOne-Time Purchase
Encrypt & split secrets
QR code generation
BIP-39 seed phrase support
AI assistant (Bob)
Open source (AGPLv3)
Auto-updates
Keyfile support
Inheritance plan builder
Code-signed binary
Smart card (NFC) support
Portable USB card reader
Offline-first by design

Open Source & Trust

Don't Trust,
Verify

seQRets is fully open source under the AGPLv3 license. Every line of cryptographic code is auditable. We believe security software must be transparent — anything less demands blind trust.

Long-term recovery
Licensed under AGPLv3
Full source code on GitHub
Community contributions welcome
View on GitHubGitHub stars