TwoFac

Spec sheet

Purpose

TwoFac is an open-source authenticator that generates time-based one-time passwords (TOTP) for online accounts.Read 9 Oct 2026 · twofac.app

Free plan

YesRead 21 Sep 2026 · twofac.app

Privacy

The app does not collect, store, or transmit personal data, usage statistics, or crash reports to a central server.Read 9 Oct 2026 · twofac.app

Support

The FAQ directs users to GitHub Discussions for questions, and the maker invites bug reports and contributions through GitHub.Read 9 Oct 2026 · twofac.app

CLI

The command-line tool can manage accounts, display auto-refreshing codes, create encrypted backups, and pipe OTP codes into scripts.Read 9 Oct 2026 · twofac.app

Code type

totp and hotpRead 21 Sep 2026 · twofac.app

Cross-platform

It offers native apps for mobile and desktop, a web app, browser extensions, command-line tools, and wearable companions.Read 9 Oct 2026 · twofac.app

Device security

Android and iOS apps support biometric authentication, and browser extensions support WebAuthn or passkeys.Read 9 Oct 2026 · twofac.app

Encrypted backup

YesRead 21 Sep 2026 · twofac.app

Encryption

The maker says secrets and backups are encrypted with a passkey before storage or transmission, so only devices with that passkey can decrypt them.Read 9 Oct 2026 · twofac.app

Migration

It imports accounts from Authy and 2FAS JSON exports, Ente Auth otpauth URIs, and Google Authenticator QR exports.Read 9 Oct 2026 · twofac.app

Multi-device sync

YesRead 21 Sep 2026 · twofac.app

Notable limit

The hosted CLI installer supports macOS and Linux x86_64; Windows CLI binaries are provided separately as direct executable downloads.Read 9 Oct 2026 · twofac.app

Offline codes

TOTP code generation happens locally on the device and does not require an internet connection.Read 9 Oct 2026 · twofac.app

Open source

TwoFac is released under the MIT license, and its source code is available for review on GitHub.Read 9 Oct 2026 · twofac.app

Supported platforms

Android,iOS,macOS,Windows,Linux,Web,Chrome,Firefox,Wear OS,watchOS,CLIRead 21 Sep 2026 · twofac.app

Wearables

Wear OS and watchOS companion apps cache codes offline and sync accounts when the watch is connected.Read 9 Oct 2026 · twofac.app

Plans and prices

Every TwoFac plan and price →

Where Specifiction places it

• Authenticator apps#30 of 1118.3