4.8
out of 5Based on 10,000 reviews
Why Choose Authenticator
Authenticator is a complete 2FA toolkit built around zero-knowledge encryption. Generate TOTP codes offline, sync end-to-end encrypted, and keep every account safe across all your devices.
Authenticator generates TOTP codes fully on-device using zero-knowledge encryption with a key that never leaves your device — we literally cannot see your secrets.
Authenticator backs up and syncs every account end-to-end encrypted across iPhone, iPad and Mac so your codes are always within reach, never exposed in transit.
Authenticator imports the entire Google Authenticator vault on-device in minutes — no manual re-scanning and no exported secrets leaving your device.
Authenticator scans QR codes from camera or screen and accepts pasted secrets in one tap for instant account onboarding, with no fiddly setup.
Authenticator works fully offline so you can generate verification codes anywhere — on a plane, in a basement, or with no Wi-Fi at all.
Authenticator locks the entire app behind Face ID, Touch ID, or a passcode so your 2FA codes stay safe even on a shared or lost device.
Authenticator's multi-device model lets you keep a master device and safely add new phones or tablets without losing accounts or compromising security.
Authenticator ships with 2,000+ step-by-step 2FA setup guides covering the services people actually sign in to every day, so you're never stuck.
How It Works
No account, no configuration, no friction. Authenticator gets you from install to protected in under a minute.
Download Authenticator on iPhone, iPad, Mac or Android and unlock it instantly with Face ID, Touch ID or a passcode — no account required.
Add accounts in seconds by scanning a QR code, importing your entire Google Authenticator vault, or pasting a secret directly into Authenticator.
Open Authenticator whenever a service prompts for a 2FA code and it generates a fresh TOTP code, online or offline, on every device you own.
Screenshots
A closer look at the features that help 10 million users secure their logins with Authenticator every day.
Testimonials
Real security leaders, real engineers, real peace of mind. Here is what Authenticator users have to say.
“Authenticator let us replace SMS codes and hardware tokens with a 2FA app our team actually likes using. Onboarding new engineers takes minutes, and encrypted sync means nobody gets locked out when they swap devices.”
Michael Hartmann
Chief Information Security Officer
“QR import, tap-to-reveal codes, and clear icons make handling dozens of logins across devices fast and stress-free. Authenticator just stays out of the way and does exactly what I need.”
Sofia Alvarez
Senior Product Manager
“Encrypted cloud sync and master-device control mean my production accounts stay safe even when I change or lose devices. Authenticator is the best 2FA app I've ever used, full stop.”
Daniel Novak
Indie App Developer & Founder
“Rolling Authenticator out across our engineering team was the easiest security win of the year. The Google Authenticator import alone saved us days of tedious re-enrollment.”
Aiko Tanaka
IT Lead at a 200-person SaaS
FAQ
Everything you need to know about Authenticator.
