Comparison

Google Authenticator vs Authy: A Detailed Comparison

2026-02-05 · 7 min read · Steven Adams · Last reviewed: March 2026

Google Authenticator and Authy are the two most widely used TOTP apps. Both generate the same codes — the difference is everything else around them.

Quick Comparison

  1. Account Backup
  2. Multi-Device Support
  3. Security Features
  4. Privacy
  5. The Verdict

Account Backup

Google Authenticator: Now supports encrypted Google account backup. Before 2023, it offered no cloud backup — losing your phone meant losing all your 2FA tokens permanently.

Authy: Has offered encrypted cloud backup since launch. Your tokens are restored instantly on any new device by logging in with your Authy account.

Winner: Authy — the backup experience is more mature and reliable.

Multi-Device Support

Google Authenticator: Codes are stored on one device. You can export/transfer, but it's not designed for simultaneous multi-device use.

Authy: Supports multiple devices simultaneously. Access your codes on your phone, tablet, and desktop at the same time.

Winner: Authy

Security Features

Google Authenticator: No app lock. Anyone who picks up your phone can see your codes.

Authy: Supports PIN lock and biometric lock. Can be protected so codes are only visible after authentication.

Winner: Authy

Privacy

Google Authenticator: If you use Google account backup, your encrypted token data is stored by Google. If you skip backup, it's fully offline.

Authy: Requires a phone number and Authy account. Token data is stored on Twilio's (Authy's parent company) servers, encrypted with your password.

Winner: Google Authenticator (with backup disabled) — no account required, offline by default.

The Verdict

Choose Authy if: You want cloud backup, use multiple devices, and want app-level PIN/biometric protection. Best for most users.

Choose Google Authenticator if: You prefer simplicity, already use Google, or want an offline-by-default experience without creating another account.

Neither option? 2faco.com generates TOTP codes in your browser — no app download or account required.

The Core Difference

Both apps generate standard TOTP codes that work with any service — the choice between them does not affect compatibility. The key difference is backup and sync: Google Authenticator relies on cloud backup through your Google Account (enabled by default since 2023), while Authy has offered encrypted multi-device cloud sync since its launch. If you are comfortable with Google having an encrypted copy of your 2FA secrets, Google Authenticator's backup now works reliably. If you want multi-device access or prefer Twilio's infrastructure, Authy remains the stronger choice for power users.

Google Authenticator — Strengths and Weaknesses

Strengths: Simple interface with no clutter, Google Account cloud backup means your codes survive phone loss, available on iOS and Android, trusted brand. Weaknesses: Until 2023, had no backup at all — many users lost accounts when phones broke. The new cloud backup is tied to your Google Account, so if that is compromised, your 2FA seeds could theoretically be exposed. Does not support multiple devices simultaneously. No PIN lock inside the app itself.

Authy — Strengths and Weaknesses

Strengths: Encrypted cloud backup that works across multiple devices (phone + tablet + desktop app), supports PIN/biometric lock inside the app, desktop app available for Mac, Windows, and Linux, allows backups without tying to a Google Account. Weaknesses: Account recovery tied to your phone number — if you lose the number without having another device set up, recovery requires contacting Twilio support. Slightly more complex interface than Google Authenticator.

Which Is More Secure?

Neither is significantly more secure than the other for everyday use. Both generate identical TOTP codes. The security trade-off is about backup: storing your 2FA secrets in the cloud (either Google's or Authy's encrypted servers) adds convenience but introduces a theoretical cloud-side risk. For the vast majority of users, the risk of losing a phone with no backup far outweighs the risk of cloud compromise. Having backups enabled in either app is the right default.

Can I Switch Between Them?

Yes, but it requires re-enrolling each account. There is no direct export from Google Authenticator to Authy or vice versa. To switch, go into each service's 2FA settings, disable the current authenticator, and re-scan a new QR code with your target app. This is time-consuming for accounts with many 2FA entries but is the correct process — do not try to share QR codes or secret keys via screenshots, as this creates a security risk.

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The Core Difference: Local vs Cloud Backup

Google Authenticator and Authy are both TOTP authenticator apps that generate 6-digit codes for two-factor authentication — the codes they produce are functionally identical and work with the same accounts. The fundamental difference is how they handle backup and recovery. Google Authenticator syncs to your Google account (since the 2023 update), while Authy stores an encrypted backup of your 2FA secrets on its own servers, protected by a separate backup password you set. This difference matters enormously when you lose or replace your phone.

Google Authenticator

Google Authenticator's main strengths are its simplicity and its 2023-added Google account sync — your codes transfer automatically when you sign into Authenticator on a new device with the same Google account. The Google account sync is encrypted using your Google account's encryption, meaning someone with access to your Google account could potentially access your 2FA seeds. For most users this is an acceptable trade-off.

Authy

Authy was designed from the ground up with backup and multi-device use in mind. Your 2FA secrets are encrypted with a backup password before being uploaded to Authy's servers — Authy cannot decrypt them without your backup password. Authy supports running simultaneously on multiple devices and has a desktop app. The trade-off: if you forget your Authy backup password and lose all your devices, there is no recovery path. For high-security environments where you prefer zero cloud storage of 2FA secrets, consider open-source alternatives like Aegis (Android) or Raivo (iOS), which store your vault locally.

Frequently Asked Questions

Are the TOTP codes from Google Authenticator and Authy interchangeable? Yes — codes generated by any TOTP-compliant app for the same account are identical. The codes are calculated from your secret key and the current time using a standard algorithm.

What happens to my Authy codes if Authy shuts down? Authy has published a migration guide in anticipation of this scenario. Regularly maintaining backup codes for all important accounts mitigates this risk.

Is it safe to have Authy on my desktop computer? Authy's desktop app is convenient but means a compromised computer could expose your 2FA codes. For high-security accounts, keeping 2FA strictly on a mobile device separate from your computer provides stronger physical separation.