Secure 2FA authenticator with blockchain backup and encryption.
About this app
Conceal Authenticator - The First Decentralized 2FA App
🔐 SECURE 2FA AUTHENTICATOR Generate TOTP codes for all your accounts with military-grade encryption and biometric security. • HMAC-SHA1 (standard) • HMAC-SHA256 • HMAC-SHA512 • Period: 30 or 60 seconds • Digits: 6, 7, or 8
🚀 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, Pink, 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. (New to crypto? Visit conceal.network to get started.)
⚠️ IMPORTANT: Always backup your recovery seed. Self-custody means you're responsible for your keys.
Licensed under BSD-3-Clause, by acktarius (Conceal Network Developer).
What's New in v1.1.3
Imported from the F-Droid repository index.
- - add support for HMAC-SHA256 and HMAC-SHA512
- - add support for period 60seconds
- - add support for 7 and 8 digits
- - add new theme pink
- - blockchain synchronization more robust
- - fix future code partial display
Version history
Mar 3, 2026 · 91.9 MB · Android API 24–35 · code 39
Imported from the F-Droid repository index.
- - add support for HMAC-SHA256 and HMAC-SHA512
- - add support for period 60seconds
- - add support for 7 and 8 digits
- - add new theme pink
- - blockchain synchronization more robust
- - fix future code partial display
SHA-256 2a139aedc94148fed7ff50de7138a34badbe503eb3129ca047894564e329c7a4
Jan 16, 2026 · 91.8 MB · Android API 24–35 · code 37
Imported from the F-Droid repository index.
- - improve maintainability
SHA-256 360a882a72275e5ff05542fc1f53c64ac5a8ec6a588ee80d6b05104e02859005
Will it run on your device?
92%
- Runs on a broad range of modern Android versions.
- Multiple CPU architectures are covered.
- Aligned with the latest Android target SDK expectations.
Installation Guide
Open Settings on your Android device
Go to Security → Unknown sources (or Install unknown apps)
Enable "Allow from this source" for your browser or file manager
Open the downloaded APK file from your Downloads folder
Tap "Install" and wait for installation to complete
Launch the app from your home screen
Make sure to re-enable Unknown Sources restrictions after installation for security.
How to install this safely
How to verify the file you downloaded
Before you install anything, confirm the file is the one described here. On a computer, run shasum -a 256 your-download.apk (macOS or Linux) or certutil -hashfile your-download.apk SHA256 (Windows), then compare the output character-for-character with the SHA-256 on this page. If a single character differs, the file is not the build we recorded — delete it.
What the signing certificate proves
Every Android app is signed with a private key that only its developer holds. The fingerprint on this page is a hash of the matching public certificate, and it proves continuity rather than identity: it tells you a build came from whoever signed the earlier ones. Android enforces this at install time — if a package claiming to be com.acktarius.concealauthenticator is signed with a different key, the system will refuse to install it over your existing copy. A fingerprint that changes between releases is worth pausing on, because a repackaged app that has been modified by someone else cannot keep the original signature.
How to roll back to an earlier version
If the current release misbehaves, 1.1.1 is the last build before it. Android will not install an older version code over a newer one, so you must uninstall Conceal Authenticator first — which clears its local data unless you have a backup. Reinstall the older APK only if its signing fingerprint matches the build you already trust, and check the API range: an older release may target an Android version your device has moved past.
Why we list sources instead of hosting everything
The official store channel is almost always the right choice: it updates automatically and carries the publisher's own distribution guarantees. A direct APK is useful when a device has no store access, when a rollout has not reached your region, or when you need a specific version — and only when the publisher has authorized that copy. APKBrowse does not list pirated, cracked, or unauthorized rebuilds of Conceal Authenticator, and a listing is removed when the evidence for it stops holding up.
Get Conceal Authenticator
Every source we list for com.acktarius.concealauthenticator is legality-reviewed. Pirated or cracked builds are never offered.
Other sources
F-Droid listing
officialF-Droid builds this app from source and signs it. This is its official listing, with older builds and full release notes.
Source code
verified publisherThe upstream repository this build is compiled from.
We check legality and signature continuity, but device behaviour still varies. Install at your own discretion.
App Information
Security Verification
We record provenance; we do not run malware scans. Verify the hash yourself before installing.
SHA-256 Hash
2a139aedc94148fed7ff50de7138a34badbe503eb3129ca047894564e329c7a4
Signing certificate
adb2e56b4263b7cbf2c90610d17b403bd8fd6f2af61e3bbfdd853fefc2fa7c13
Permissions Required
Previous Versions
The signing certificate fingerprint for this release is on record, so a build that does not match it did not come from this publisher.
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