Military-grade encryption meets effortless note-taking
Your thoughts, ideas, and sensitive information deserve the highest level of protection. Pass Mega Secure Notes combines end-to-end encryption, biometric authentication, and multi-device sync to create the most secure note-taking experience available.
Unlike traditional note apps that store your data in plain text on their servers, every single note is encrypted on your device before it ever leaves. Not even we can read your notes. That's the power of zero-knowledge architecture.
| Feature | Pass Mega | Bitwarden | 1Password | Google Keep | Evernote | Apple Notes | Notion | Standard Notes |
|---|---|---|---|---|---|---|---|---|
| End-to-End Encryption | ✓ | ✓ | ✓ | ✗ | ✗ | ✓ | ✗ | ✓ |
| Zero-Knowledge Architecture | ✓ | ✓ | ✓ | ✗ | ✗ | ✗ | ✗ | ✓ |
| Biometric Unlock | ✓ | ✓ | ✓ | ✗ | ✗ | ✓ | ✗ | ✓ |
| Device Access Alerts | ✓ | ✓ | ✓ | ✗ | ✗ | ✗ | ✗ | ✗ |
| Open Source | ✗ | ✓ | ✗ | ✗ | ✗ | ✗ | ✗ | ✓ |
| Cross-Platform | ✓ | ✓ | ✓ | ✓ | ✓ | ✗ | ✓ | ✓ |
| Offline-First | ✓ | ✓ | ✓ | ✗ | ✗ | ✓ | ✗ | ✓ |
| Free (Full Features) | ✓ | ✓ | ✗ | ✓ | ✗ | ✓ | ✗ | ✗ |
| Self-Hostable | ✗ | ✓ | ✗ | ✗ | ✗ | ✗ | ✗ | ✓ |
Understanding who can access your data and how long it would take to break the encryption.
| Security Aspect | Pass Mega | Bitwarden | 1Password | Google Keep | Evernote | Apple Notes | Authy | Keeper | Standard Notes | Notion |
|---|---|---|---|---|---|---|---|---|---|---|
| Server Can Read Your Notes | ✗ Never | ✗ Never | ✗ Never | ⚠️ Yes | ⚠️ Yes | ✗ No | ✗ Never | ✗ Never | ✗ Never | ⚠️ Yes |
| Employees Can Access Data | ✗ Never | ✗ Never | ✗ Never | ⚠️ Yes | ⚠️ Yes | ⚠️ Possible | ✗ Never | ✗ Never | ✗ Never | ⚠️ Yes |
| Government Can Request Data | Only encrypted blobs (useless without password) |
Only encrypted data (zero-knowledge) |
Only encrypted data (zero-knowledge) |
Full plain text access | Full plain text access | Encrypted data only | Only encrypted data (zero-knowledge) |
Only encrypted data (zero-knowledge) |
Only encrypted data (zero-knowledge) |
Full plain text access |
| Data Breach Impact | ✓ Minimal Encrypted data useless |
✓ Minimal Encrypted data useless |
✓ Minimal Encrypted data useless |
✗ Severe All notes exposed |
✗ Severe All notes exposed |
⚠️ Moderate Encrypted but iCloud key may help |
✓ Minimal Encrypted data useless |
✓ Minimal Encrypted data useless |
✓ Minimal Encrypted data useless |
✗ Severe All content exposed |
| Encryption Algorithm | XChaCha20-Poly1305 Military-grade AEAD |
AES-256-CBC + HMAC-SHA256 |
AES-256-GCM Industry standard |
None (TLS only in transit) |
None (TLS only in transit) |
AES-256-GCM (with device key) |
AES-256 Industry standard |
AES-256-GCM + ChaCha20 |
XSalsa20-Poly1305 or AES-256 |
None (TLS only in transit) |
| Time to Break Encryption (with strong 12-char password) |
~10²⁴ years Longer than universe age |
~10²³ years Extremely secure |
~10²³ years Extremely secure |
Instant No encryption at rest |
Instant No encryption at rest |
~10²² years Very secure |
~10²³ years Extremely secure |
~10²³ years Extremely secure |
~10²³ years Extremely secure |
Instant No encryption at rest |
| Brute Force Protection (KDF) | ⭐ Argon2id Memory-hard, GPU-resistant 🛡️ Superior GPU Defense |
PBKDF2-HMAC-SHA256 (Argon2id optional) 100,000+ iterations ⚠️ GPU-acceleratable |
PBKDF2-HMAC-SHA256 100,000+ iterations ⚠️ GPU-acceleratable |
N/A (no password protection) |
N/A (no password protection) |
PBKDF2 Standard iOS protection ⚠️ GPU-acceleratable |
PBKDF2 Industry standard ⚠️ GPU-acceleratable |
PBKDF2 1,000,000+ iterations ⚠️ GPU-acceleratable |
Argon2 or PBKDF2 User configurable ✓ Argon2 available |
N/A (no password protection) |
| GPU Cracking Resistance | 🏆 Excellent Requires 64MB+ RAM per hash GPU farms ineffective |
⚠️ Moderate Can be GPU-accelerated 10,000x faster on GPUs |
⚠️ Moderate Can be GPU-accelerated 10,000x faster on GPUs |
N/A | N/A | ⚠️ Moderate Can be GPU-accelerated |
⚠️ Moderate Can be GPU-accelerated |
⚠️ Moderate Can be GPU-accelerated |
✓ Good Excellent if Argon2 used Moderate if PBKDF2 |
N/A |
| Trust Model | Zero-Trust Verify cryptography yourself |
Zero-Knowledge Open source, audited |
Zero-Knowledge Audited by experts |
Trust Google Closed source |
Trust Evernote Closed source |
Trust Apple Closed source |
Zero-Knowledge Security audited |
Zero-Knowledge SOC 2 certified |
Zero-Knowledge Open source |
Trust Notion Closed source |
With Pass Mega, even if our servers are hacked, government subpoenaed, or employees go rogue, your notes remain encrypted. Breaking the encryption would take trillions of years even with the world's fastest supercomputers. Password managers like Bitwarden, 1Password, Authy, and Keeper use similar zero-knowledge encryption, while services like Google Keep, Evernote, and Notion can read your notes in plain text. Standard Notes also provides zero-knowledge encryption with open source code.
Note on Vaultwarden: Vaultwarden is a self-hosted, open-source implementation of the Bitwarden server, written in Rust. It offers the same zero-knowledge encryption as Bitwarden but allows you to run your own server for complete control. Perfect for privacy enthusiasts who want to manage their own infrastructure!
PBKDF2 (used by Bitwarden, 1Password, Keeper, etc.) can be cracked 10,000x faster using GPU farms because it only requires fast computation. A single high-end GPU can test billions of passwords per second.
Argon2id (used by Pass Mega and optionally by Standard Notes) requires 64MB+ of RAM per password attempt, making GPU attacks economically infeasible. GPUs have limited memory per core, so they can't parallelize Argon2id effectively. This is called "memory-hard" protection.
Real-world impact: An attacker with a $100,000 GPU cluster could crack PBKDF2 in days but would take centuries to crack Argon2id with the same resources. That's why Argon2id won the Password Hashing Competition in 2015.
Built with cutting-edge cryptography libraries and modern web technologies for maximum security and performance.
Visual comparison of encryption algorithms and key derivation functions. Higher and further right = better security.
When you create your vault, your password goes through Argon2id key derivation with a unique salt. This creates your encryption key that never leaves your device.
Each note is encrypted using XChaCha20-Poly1305 AEAD before being stored. Even if someone accesses your device storage, they only see encrypted gibberish.
When you enable sync, your already-encrypted notes are sent to the cloud. The server never receives your master password or encryption keys - it only stores encrypted blobs.
On a new device, enter your master password and encryption salt. Your encryption key is regenerated locally, allowing you to decrypt and access your notes.
Enable biometric unlock to store your encrypted master password locally using WebAuthn. Your fingerprint/face never leaves your device - it just unlocks the encrypted password.
No. Your notes are encrypted on your device before reaching our servers. We only store encrypted data and never have access to your master password or encryption keys.
Because of zero-knowledge encryption, we cannot recover your password. However, you can export your encryption salt as a QR code or backup and use it on another device if you remember your password.
Yes. All encryption happens locally on your device using XChaCha20-Poly1305 AEAD (Authenticated Encryption with Associated Data), and all network traffic uses HTTPS. Even if someone intercepts the data, they only see encrypted blobs that are cryptographically authenticated - meaning any tampering attempt will be detected and rejected.
Why this matters: AEAD ensures both confidentiality (data can't be read) and integrity (data can't be modified without detection), protecting you from man-in-the-middle attacks even on untrusted networks.
Unlimited to the extent of infrastructure possibilities. You can access your vault from any device - just use the same master password and encryption salt on each device.
Yes, completely free. No premium tiers, no feature restrictions, no ads. We believe privacy should be accessible to everyone.
Here's what happens in different breach scenarios:
With Pass Mega: Attackers get encrypted blobs. Without your password, it's useless gibberish that would take trillions of years to crack.
With other apps: Attackers instantly read all your notes in plain text.
With Pass Mega: We hand over encrypted blobs. Government still can't read your notes without your password.
With other apps: Government gets full access to all your notes immediately.
With Pass Mega: Employees can't read your notes - they don't have your password or encryption keys.
With other apps: Employees with database access can read everything.
With Pass Mega: Auto-lock protects your vault. Revoke device access from another device remotely.
With other apps: Anyone with your phone can read your notes if they're logged in.
Pass Mega Secure Notes is completely free and open source. Your contributions help us keep it that way and fund ongoing development, security audits, and server costs.
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