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Conceal Authenticator

Secure 2FA authenticator with blockchain backup and encryption.
New in version 1.1.1
- improve maintainability
Conceal Authenticator - The First Decentralized 2FA App

🔐 SECURE 2FA AUTHENTICATOR
Generate TOTP codes for all your accounts with military-grade encryption and biometric security.

🚀 WORLD'S FIRST DECENTRALIZED 2FA BACKUP
• Permissionless - No registration or approval needed
• Automatic - Your keys are backed up to the blockchain automatically
• Decentralized - No single point of failure, no central server
Nobody has done this before. This is what decentralization is meant for.

✨ FLEXIBLE OPTIONS
• Local-only mode - Use as a standard 2FA app
• Manual backup - Export when needed
• Automatic blockchain backup - Your keys saved securely on-chain

📦 BUILT-IN WALLET
Seamless blockchain integration. Recover your 2FA keys with your wallet seed - no third-party servers.

🛡️ PRIVACY & SECURITY
• Self-custody - You own your keys
• Biometric security - Fingerprint and face recognition
• No central authority - Direct blockchain interaction
• Offline capable - Works without internet

👥 SHARE WITH TRUSTED CONTACTS
• Share your 2FA keys with significant other or family using whitelisted payment IDs.
(Blockchain can broadcast 2FA code to trusted recipients via auto-destruct messaging)

🎨 FEATURES
• Multiple themes (Light, Orange, Velvet, Dark)
• Future codes preview
• Custom blockchain nodes
• QR code scanning
• Backup encrypted secret shared key on your blockchain 2FA dedicated wallet.

💡 HOW IT WORKS
1. Add 2FA accounts by scanning QR codes
2. Generate secure codes anytime
3. Your keys are backed up to the blockchain
4. Recover with your wallet seed

Powered by the Conceal Network blockchain.

⚠️ IMPORTANT: Always backup your recovery seed. Self-custody means you're responsible for your keys.
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Versions

Although APK downloads are available below to give you the choice, you should be aware that by installing that way you will not receive update notifications and it's a less secure way to download. We recommend that you install the F-Droid client and use that.

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  • Version 1.1.1 (37) suggested Added on Jan 16, 2026

    arm64-v8a armeabi-v7a x86 x86_64

    This version requires Android 7.0 or newer.

    It is built and signed by F-Droid, and guaranteed to correspond to this source tarball.

    Permissions
    • view network connections
      Allows the app to view information about network connections such as which networks exist and are connected.
    • take pictures and videos
      This app can take pictures and record videos using the camera while the app is in use.
    • have full network access
      Allows the app to create network sockets and use custom network protocols. The browser and other applications provide means to send data to the internet, so this permission is not required to send data to the internet.
    • read the contents of your shared storage
      Allows the app to read the contents of your shared storage.
    • This app can appear on top of other apps
      This app can appear on top of other apps or other parts of the screen. This may interfere with normal app usage and change the way that other apps appear.
    • use biometric hardware
      Allows the app to use biometric hardware for authentication
    • use fingerprint hardware
      Allows the app to use fingerprint hardware for authentication
    • control vibration
      Allows the app to control the vibrator.
    • modify or delete the contents of your shared storage
      Allows the app to write the contents of your shared storage.
    • com.acktarius.concealauthenticator.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION

    Download APK 91 MiB PGP Signature | Build Log

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