CodeBook -2FA & Password Vault

XuanRan

About this app

🔒 Why choose CodeBook?
In today’s digital age, security matters more than ever. CodeBook is a privacy-first password manager that supports 2FA, passwords, bank cards, IDs, and SSH keys — all stored securely offline. With zero network architecture, your sensitive data never leaves your device.

✨ Core Features

🌐 100% Offline Security

- No network permissions; fully cut off from the internet
- All data stored locally — complete control in your hands
- Zero data collection, zero uploads, zero network activity

🛡️ Military-Grade Encryption

- AES-256 encryption standard
- Master password + biometrics for dual protection
- Even the app itself can’t access your data without your permission

🚀 Powerful and Easy to Use

- Secure storage for passwords and accounts
- Supports TOTP, HOTP, and Steam OTP
- Compatible with Google & Microsoft Authenticator
- Store ID cards, bank cards, SSH keys
- Auto-fill with package detection
- Password-to-app binding for quick logins

💾 Safe Backup & Migration

- Local backup & restore
- Easily transfer to new devices
- Import/export done completely offline

🎯 Use Cases

- Enterprise credential management
- Personal account & social media management
- Developers storing SSH/API keys
- Users with strict privacy needs
- Users who do not trust cloud storage

🔧 Supported Data Types

- Website logins
- App credentials
- 2FA codes (TOTP/HOTP/Steam)
- ID documents
- Bank cards
- SSH keys
- Custom tags

🎨 User Experience

- Clean Material Design UI
- Smooth and intuitive
- Dark mode supported
- Multilingual interface
- No ads, no in-app purchases

🔐 Security Commitment
CodeBook follows a strict Zero Network policy:

- No network API in the code
- No internet permissions
- No third-party SDKs for tracking or ads

📱 System Requirements

- Android 8.0+
- App size: 2MB
- Permissions: Camera (for OTP QR), Biometrics

What's new

[Important Update] Please back up your data before updating, as backup files from older versions will no longer be compatible!

- Adapted for Android 16
- Backup mechanism upgraded; old backups can no longer be imported (please note!)
- Added support for HOTP and Steam OTP codes
- TOTP feature renamed to OTP for consistency

For any issues, please contact us at [e-mail].