Enpass vs Proton Pass Comparison

• Premium (individual, 1-year): $23.99 per year
• Family (up to 6, 1-year): $47.99 per year

• Pass Plus (individual, annual): $35.88/year
• Pass Family (up to 6 users, annual): $59.88/year

Source-code review and gray-box testing of the browser extensions, mobile and desktop apps, and CLI

The vault is a SQLite database encrypted via SQLCipher (AES-256-CBC). The Vault Key is derived from the Master Password — and, optionally, a keyfile — using PBKDF2-HMAC-SHA512 at 320,000 iterations, with a unique random salt per database.

Vault and item data are encrypted with 256-bit AES-GCM under 32-byte random keys; the user key is protected by a bcrypt hash of the account password. Authentication uses a hardened SRP implementation; sharing uses OpenPGP with ECC (Curve25519). Every field is encrypted client-side — usernames, URLs and notes included — so Proton cannot see which services you hold accounts with. Offline access on paid plans uses Argon2 for the local hash.

Proton AG, Geneva, Switzerland. Since June 2024 the primary shareholder is the non-profit Proton Foundation, which the founders endowed with Proton shares in an arrangement they describe as irrevocable. Proton began as a 2014 crowdfunding campaign.