Private Encrypted Vault

Lockboxy

Personal projectFullstack Engineer (solo)07/2026 — Present

A private vault for photos, files, passwords and notes, encrypted on the iPhone behind the owner's own passcode.

What I delivered

Argon2id + AES-256-GCM with a DEK-wrap hierarchy, so passcode changes never re-encrypt the vault
Recovery key, verifiable encrypted backups and a security log of unlock attempts
Shipped on the App Store as Lockboxy, in 10 languages
RevenueCat-powered subscription model