Zero-knowledge · Local-first · Free

Your secrets,
impenetrable.

A premium password manager that encrypts everything locally with military-grade AES-256-GCM. No cloud. No subscription. No compromise.

AES-256
GCM Encryption
600K
PBKDF2 Iterations
0
Data sent to servers
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Features

Everything you need,
nothing you don't.

Built for people who take privacy seriously. Every feature exists for a reason.

AES-256-GCM Encryption

Free

Military-grade authenticated encryption on every save. GCM tag verification means tampered data is immediately detected.

Zero-knowledge vault

Free

Your master password never leaves your device. Key derivation via PBKDF2-HMAC-SHA256 with 600,000 iterations.

Password generator

Free

Standard, memorable (Diceware) and PIN modes. Entropy calculator in bits. History of last 8 generated passwords.

Command palette

Free

Ctrl+K instant search across all entries. Navigate with keyboard, open in one keystroke. No mouse required.

Tags & categories

Free

Organise entries with custom tags. Filter by one or multiple tags. Sort alphabetically, by date, or by favourites.

Auto-clear clipboard

Free

Copied passwords are automatically erased from your clipboard after a configurable delay. No traces left behind.

Inactivity auto-lock

Free

The vault locks automatically when you step away. Configurable from 1 to 30 minutes. Lock on minimize too.

Password health dashboard

Pro

Detect weak, reused and old passwords. See your overall vault security score. Know exactly what to fix.

Security

Trusted because it's
verifiable.

Every security decision is documented, every algorithm is standard. No black boxes.

crypto_spec.json
{
"Cipher":"AES-256-GCM"
"KDF":"PBKDF2-HMAC-SHA256"
"Iterations":"600,000"
"Salt":"256-bit random"
"Nonce":"96-bit random"
"Auth tag":"128-bit GCM"
}

Zero-knowledge

Your master password is never stored — not on disk, not in memory after locking. Key derivation happens locally and the result lives only in RAM until you lock.

Fully offline

No server, no sync, no telemetry. Your vault file never leaves your machine. Future cloud sync will be end-to-end encrypted — the server will never see plaintext.

Open threat model

We document exactly what we protect against. Vault file theft, clipboard sniffing, inactivity attacks, weak KDF — all addressed explicitly in the security docs.

No homegrown crypto

We use the cryptography Dart package — a battle-tested library with hardware acceleration on supported platforms. No custom algorithms, ever.

Pricing

Simple, honest pricing.

Free forever. Pro is a one-time payment — no subscription, ever.

Free

€0

The full vault experience, no credit card, no time limit.

Download free
  • Unlimited vault entries
  • AES-256-GCM encryption
  • Password generator (all modes)
  • Tags & categories
  • Ctrl+K command palette
  • Clipboard auto-clear
  • Auto-lock on inactivity
  • Import from Chrome / Bitwarden
  • System tray integration
  • 6 UI themes (Dark only)
Lifetime deal

Pro

€14.99

One-time payment. Yours forever. All future updates included.

Get Nyx Pro

Crypto payments accepted via Plisio

  • Everything in Free
  • Password health dashboard
  • Weak & reused password detection
  • Password expiry reminders
  • Multiple vaults
  • Biometric unlock
  • Secure notes
  • Encrypted backup & export
  • Auto-backup
  • All 6 premium themes
  • Cloud sync (coming soon)
  • Priority support

No subscription. No auto-renewal. No account required to use the app.

Download

Start protecting your
passwords today.

Free to download. Free to use. No account required. Just install and create your vault.

Download for Windowsv1.0.0 · Free

Windows 10 / 11 · 64-bit · ~25 MB

Windows

Available now

Android

Coming soon

macOS & iOS

Coming soon

Linux

Coming soon

FAQ

Questions & answers.