DUOVAULT · E2E COUPLE VAULT

A vault only the two of you
can open.

DuoVault is an end-to-end encrypted (E2E) couple vault app. Photos and videos are encrypted and kept on your device, and shared safely with your partner through the couple vault. Encryption keys stay on your device and are never sent to a server.

iPhone · iOS · Preparing for the App Store · Free + Premium subscription

How it works

  1. Store — Encrypt photos and videos with AES-GCM in your personal vault.
  2. Connect — Sign in with Apple or Google and link with your partner using an invite code.
  3. Share — View together in the couple vault, with view history and reactions.

Key features

  • Personal vault — AES-GCM encrypted storage, Face ID/Touch ID lock, and automatic re-lock when the app goes to the background
  • Couple vault — Partner linking by invite code, photo and video sharing, view history and reactions (Love/Happy)
  • Breakup mode — Partner access is blocked immediately; shared items are blurred for 7 days and then permanently deleted
  • Premium subscription — Removes storage, viewing-window, and video length limits

Security principles

  • The encryption key (master key) is stored only in your device's Keychain and is never sent to a server.
  • Servers hold encrypted data (ciphertext) only; no one, including the operator, can read the contents.
  • Your app passphrase is used only to restore the key and is never transmitted anywhere.
  • If you lose your passphrase, your data cannot be recovered. This is intentional, for security.

Read the Privacy Policy →

Notices and limitations

  • Personal vault data is stored on your device only and is not stored on servers.
  • Couple vault data is stored on servers in end-to-end encrypted form only.
  • Responsibility for uploaded content and any legal consequences rests with the user.
  • This service is not directed at children under 14.

Read the Subscription and Billing Policy →

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