Secret Keeper — Encryption

Private messages & files

Free · Designed for iPad. Not verified for macOS.

Secret Keeper is a standalone end-to-end encryption tool. It turns any communication channel into a secure one: encrypt a message or a file, send the result over a regular messenger or e-mail, or show it as a QR code — only the intended recipient can decrypt it. NO SERVERS, NO ACCOUNTS • The app is fully offline: no sign-up, no phone number, no e-mail. • Keys are generated on your device and never leave it. • We collect no data at all — there is simply nowhere to send it. CRYPTOGRAPHY • Modern standard algorithms: X25519 + AES-GCM. • Your identity is a 12-word seed phrase: it restores your profile on a new device. • Your address is a short string / QR code that is safe to share openly. • The envelope format is open and documented (secretkeeper.net). ACCESS PROTECTION • PIN code and biometrics (Face ID / Touch ID / fingerprint). • Duress PIN: a separate code that opens an empty profile. • Automatic wipe after several failed PIN attempts. • Locks when the app goes to background; screenshot protection (can be turned off). MESSAGING AND FILES • Offline chats: per-contact message history, stored encrypted. • Encrypt files of any type (.skf) — photos, videos, documents. • Backup is a single encrypted file (.skb): its contents can only be opened with your seed phrase. INTEGRATIONS • Tetatet Chat: link the apps and secret messages get delivered online automatically. • The Secret Keeper browser extension encrypts right on websites. • Passwordless sign-in to services via QR (SK Login). WHO IT IS FOR Anyone who values privacy: personal correspondence, passwords and codes, documents, medical and financial data. Secret Keeper requires no trust in a middleman — verifiable cryptography instead of promises. Open protocol specification: https://secretkeeper.net/protocol Privacy policy: https://secretkeeper.net/privacy

Ratings & Reviews

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• App log: About → Diagnostics now has an in-app log with level and label filters, search and sharing, so support can see what happened without extra tools. A switch next to it pauses logging at any time. • Data requests: when you have only one record of the requested type, a "+" on the confirmation sheet lets you add a new one right there; the record picker has a "+" button too. • Cleaner empty states: no search icon when there are no chats or the Vault is empty; on desktop the empty "Conversations" panel shows a single message across the whole pane. • About: "Check for update" is a regular row again, and the beta toggle explains itself once when you switch it on instead of taking up a second line.

Version safe added

The developer, PAYMASTER TECHNOLOGIES ELEKTRONIK PAZARLAMA DIS TICARET LIMITED SIRKETI, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .

  • Data Not Collected

    The developer does not collect any data from this app.

    Privacy practices may vary, for example, based on the features you use or your age. Learn More

    Accessibility

    The developer has not yet indicated which accessibility features this app supports. Learn More

    Information

    Seller
    PAYMASTER TECHNOLOGIES ELEKTRONIK PAZARLAMA DIS TICARET LIMITED SIRKETI
    Size
    37.3 MB
    Category
    Utilities
    Compatibility
    Requires iOS 15.0 or later.
    • iPhone
      Requires iOS 15.0 or later.
    • iPad
      Requires iPadOS 15.0 or later.
    • iPod touch
      Requires iOS 15.0 or later.
    • Mac
      Requires macOS 12.0 or later and a Mac with Apple M1 chip or later.
    • Apple Vision
      Requires visionOS 1.0 or later.
    Languages
    English
    Age Rating
    18+
    Copyright
    © 2026 SecretKeeper.net
  • Developer Website
  • Privacy Policy

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