Can I use it on multiple devices?

Yes, if you enable cloud backup. Your codes will sync across your phone, tablet, etc.

Does it work without internet?

Yes, it works 100% offline. Internet is only needed for the optional cloud sync.

Why do I see a security warning when I open the app?

We check for risky device settings (like jailbreak or USB debugging) to help protect you.

How do I move from Google Authenticator?

Open the service’s security settings → choose Authenticator app → show QR → scan with Zunoy → confirm code.

For iOS & Android

Secure Your Digital World with Zunoy Authenticator!

Protect yourself from hackers and account takeovers. Go beyond the password with the free authenticator that works instantly—no account needed.

No Signup

Optional cloud backup

Works Offline

Your Security, Your Choice.

No Account Needed

Install and generate OTP codes offline. Nothing to create, nothing to learn.

Get Started in Seconds

No sign-up

Offline first

Minimal setup

DOWNLOAD NOW

Sign In for Benefits

Turn on encrypted cloud backup, multi-device sync, app sessions, and easy restore.

Never lose your codes

Multi-device Sync

Manage sessions

One-tap delete

SIGN UP NOW

Why Your Passwords Aren't Enough

A password is just one key. Two-factor authentication (2FA) adds a second, unique key that changes every 30 seconds. It's the simplest way to block over 99% of automated attacks, and an authenticator app like Zunoy is the most secure way to use it.

Stop Account Takeovers

Renders stolen passwords useless. Hackers can't access your account without your unique, temporary code.

More Secure Than SMS

Avoids SIM-swapping attacks. Codes generate offline on your device, not sent via vulnerable text messages.

Universal Protection

Works with any service that supports 2FA: your email, bank, social media, and work apps.

Ready for a Smarter Authenticator?

DOWNLOAD FOR FREE

Cloud Backup

No Credit Card required

Free Forever

Set up any account in under 2 minutes

Recover your codes instantly if you lose your device

Use seamlessly across your iPhone and iPad

Works 100% offline

How Zunoy Keeps You Secure

Step 1 : Download the App

Install the free app from the App Store or Google Play—no sign-up required.

Step 2 : Scan the QR Code

Point your camera at any service's 2FA QR code. Zunoy adds it instantly.

Step 3 : Use Your Code to Log In

Get 6-digit TOTP codes that refresh every 30 seconds. Works entirely offline. Download Now

DOWNLOAD NOW

Cloud Sync

Never Lose Your 2FA Codes.

Your phone isn't invincible. Enable encrypted cloud backup to sync your codes across all your devices and recover instantly from loss or theft.

End-to-End Encrypted Backup

Sync Across All Your Devices

Instant Recovery for Lost Phones

Your Data, Always in Your Control

Learn How Cloud Sync Works

Post-Login Benefits

Everything you need to stay secure, backed up, and in control — all in one place.

Encrypted Cloud Backup

Your codes are encrypted on your device before syncing. We never see your secrets—only you hold the keys.

End-to-end encryption

Recover your accounts if you lose your phone

Your keys remain yours alone

One-tap delete

Learn More →

Your privacy is non-negotiable. Here’s how we protect it.

Local-First & Encrypted

Your codes are generated and stored securely on your device first. We never see them.

Proactive Risk Warnings

We alert you if your device has jailbreak, root, or USB debugging enabled—before you use the app.

Biometric Protection

Lock the app with Face ID, Touch ID, or your fingerprint. You control access.

Screenshot Control

Prevent screenshots within the app to stop codes from being saved to your camera roll.

Optional Cloud Backup

Backup is off by default. If you enable it, everything is encrypted before it leaves your device.

Your Data, Your Control

Export your data anytime. We don’t log your secrets or events. True zero-knowledge design.

See the Difference

Breakdown of Features	Zunoy Authenticator	Google Authenticator	Microsoft Authenticator
Encrypted Sync	Yes (End-to-End Encrypted)	No	No
Flexible Dashboard	Yes (cards/list, icon/code/email focus)	No	Limited
Notifications Hub	Backup & Login Alerts for Zunoy Accounts	No	No
Multi-Device Session Management	View & Revoke Sessions	No	No
Direct Export	Full Import/Export	Yes	No
Start without an account	Yes	Yes	Yes
Works 100% Offline	Yes	Yes	Yes

Frequently Asked Questions

Is Zunoy Authenticator free?

Yes, the core app is free forever. You only need an account for optional cloud backup.

Do I need an account to start?

No. Install and generate TOTP 2FA codes offline immediately. Sign in only if you want Cloud Sync.

How is Zunoy different from Google Authenticator?

Zunoy offers encrypted cloud backup, multi-device sync, and more customization without requiring an account.

Will you see my codes or secrets?

No. Secrets stay on your device. If you enable Cloud Sync, backups are encrypted on device; we can’t decrypt them.

What happens if I lose my phone?

If you had backup enabled, you can recover your codes. Without it, they are only on that device.

Ready to Experience Zunoy?

Start your journey with Zunoy’s powerful suite of tools, designed for startups, developers, and growing teams alike.