Native macOS App

Your notes, encrypted

Military-grade AES-256 encryption protects your notes. Touch ID unlocks them. Everything stays on your Mac—no cloud, no accounts, no compromises.

Mac App Store (Coming Soon) macOS 14+ • Coming soon

AES-256-GCM

Touch ID

100% Local

How It Works

Simple on the surface,
serious underneath

🔑

Set Your Password

Create a master password on first launch. It never leaves your Mac.

→

🔐

Notes Get Encrypted

Every note is protected with AES-256-GCM encryption automatically.

→

👆

Unlock with Touch ID

Quick access with biometrics. Falls back to password when needed.

Features

Everything you need,
nothing in the cloud

🔒

Military-Grade Encryption

Your notes are protected with AES-256-GCM—the same encryption used by governments and banks. Keys are derived using HKDF-SHA256 and stored only in memory.

Password + Salt → HKDF-SHA256 → 256-bit Key → AES-GCM

👆

Touch ID / Face ID

Unlock your notes instantly with biometrics. Secure and convenient.

🔐

Auto-Lock

Cypher locks automatically when you close the window. Your notes stay protected.

🏷️

Color Tags

Organize with colors: red, orange, yellow, green, blue, purple. Visual at a glance.

📌

Pin Important Notes

Keep your most-used notes at the top. Always accessible.

🔍

Full-Text Search

Search across all your notes instantly. Find anything in seconds.

⌨️

Keyboard Shortcuts

⌘N for new note, ⌘F to search, ⇧⌘L to lock. Power user friendly.

🎨

Native macOS Design

Finder-like interface with translucent toolbar. Feels like it belongs.

Security

Your data stays
on your Mac

We can't read your notes. We don't want to. Everything is encrypted locally with keys that never leave your device.

SaltKeychainHardware-backed

Password HashKeychainSHA-256

Encryption KeyRAM onlyCleared on lock

NotesLocal fileAES-256-GCM

Ready for
real privacy?

Get Cypher on the Mac App Store. Developer Program enrollment is in progress — coming very soon.

Mac App Store (Coming Soon)

Requires macOS 14 Sonoma or later • Coming soon