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Secure Every Login.
Protect Every Account.

Auth. generates secure one-time verification codes to help protect your digital life with industry-standard, fully offline two-factor authentication.

Download Free How it works
Dashboard Graphic

Built with Security at the Core

Enterprise-grade protection scaled for your personal device.

End-to-End Encryption

Your authentication secrets remain perfectly encrypted and secure locally on your hardware.

100% Offline Mode

Codes continue working flawlessly even when you are on an airplane or have zero connection.

Atomic Time Sync

Highly accurate, algorithm-driven verification codes properly synchronized every 30 seconds.

App Features

Everything you need,
Nothing you don't.

QR Code Scanner
Biometric Lock
Cloud Backups
1-Tap OTP Copy
True Dark Mode
Device Transfer

A Complete Security Arsenal

Every standard, feature, and tool you need built directly into Auth.

Core Auth

  • TOTP Support (RFC 6238)
  • HOTP Support (RFC 4226)
  • 6 & 8-Digit Verification Codes
  • 100% Offline Generation
  • 30-Second Auto Refresh
  • Time Sync & Correction

Enterprise Security

  • AES-256 Local Encryption
  • Face ID & Fingerprint Lock
  • App PIN & Auto-Lock
  • Anti-Screenshot Protection
  • Root/Jailbreak Detection
  • Zero-Knowledge Architecture

Account Management

  • Duplicate Detection Prompt
  • Favorites & Account Sorting
  • Custom Issuers & Labels
  • Manual Secret Key Entry
  • Global Search Functionality
  • Full CRUD Control

UX & Migration

  • Encrypted Device Transfer QR
  • Import & Export Files
  • Auto-detect Service Logos
  • Material 3 / Modern UI
  • Multi-Language Support
  • Zero Advertisements

Inside the Application

Data Dashboard

Clean Account Overview

Security Scan

Instant QR Scanning

Uncompromising Security

Your sensitive information is heavily encrypted before it touches our database. We adhere strictly to standard TOTP architecture.

256

Bit AES Encryption

100%

Offline OTP Generation

0

Third-party trackers

99.9%

API Uptime

Common Questions

Everything you need to know about securing your digital identity with Auth.

Does Auth. work offline?
Yes, Auth. generates time-based verification codes strictly locally on your device, meaning it requires zero internet connection to work after initial setup.
Can I back up my accounts?
Absolutely. Auth. offers encrypted cloud backups. Your secret keys are encrypted before leaving your device, ensuring only you can decrypt and restore them.
Is Auth. free to use?
Yes, all core two-factor authentication features are 100% free with no annoying advertisements or hidden fees.
How do I transfer accounts to a new phone?
You can easily migrate your accounts by using our secure Export feature, which generates an encrypted QR code that can be scanned by your new device.
Can I use this with Google or Microsoft accounts?
Absolutely. Auth. supports the industry-standard TOTP algorithm, making it fully compatible with Google, Microsoft, GitHub, Amazon, and thousands of other services.

Take control of your security

Join thousands of users protecting their digital identities with the fastest, cleanest authenticator app available.