Seedkeeper vs Custos Clavium

This application is the ideal companion to your Seedkeeper smart card, allowing you to generate and store a wide variety of secrets, including passwords and mnemonic seedphrases. Seedkeeper is the quickest and easiest way to generate and secure all the secrets linked to your digital life. In just a few clicks, you can create a strong password and store it in the secure memory of your Seedkeeper card. Easily import your login or authentication credentials, and manage them at your fingertips, wherever you are. Features : - No account registration or KYC: simply scan your card via NFC and operate autonomously. - PIN-protected access. - Compatible with BIP39 protocol, QRCode and SeedQR specifications. - No storage of sensitive information on the application. - No collection of personal data. - The application is open-source. Features : - Generate and import strong passwords or mnemonic seedphrases (BIP39). - Specify wallet descriptors. - Import free text. - Create an encrypted backup and import it into another Seedkeeper card.

Custos Clavium is a secure NFC companion that helps you manage sensitive data without storing secrets on your phone. With Custos Clavium, your NFC card is the single source of truth for passwords, notes, OTP accounts, and wallet keys. The app provides a secure interface to view, organize, and use this data through encrypted communication and card-based authentication. Use Custos Clavium to: • Access passwords and secure notes • Manage OTP accounts and generate time-based codes • Create and manage wallet records linked to keys stored securely on the card • View public wallet addresses and network data (when internet access is enabled) • Sign supported blockchain transactions with the card • Organize slots, labels, and records without moving secrets off the card Custos Clavium is designed around a simple principle: secrets stay on the card. The app does not store private keys, wallet secrets, seed phrases, or other sensitive data as long-term local backups. Sensitive operations require card presence and NFC interaction. Features: • NFC-based secure access • Card-first secret storage • Passwords, notes, wallets, and OTP records • BIP39-assisted input • Wallet derivation support • On-card signing for supported flows • App PIN and biometric protection • Configurable network and internet access settings Custos Clavium is built for users who want stronger separation between their mobile device and their secrets, while keeping everyday access practical and fast.