Comparison

Best Authenticator Apps in 2026: Compared and Ranked

2026-02-01 · 8 min read · Steven Adams · Last reviewed: March 2026

All TOTP authenticator apps generate codes using the same standard algorithm — the difference is in features, backup options, and ease of use. Here's how the top options compare.

In This Guide

  1. Google Authenticator
  2. Authy
  3. Microsoft Authenticator
  4. Aegis (Android)
  5. Raivo (iOS)
  6. Which Should You Choose?

Google Authenticator

Best for: Simplicity and Google account integration

  • Generates TOTP codes for any service
  • Supports encrypted Google account backup (added in 2023)
  • Simple, no-frills interface
  • Limited features — no password protection, no multiple devices natively

Verdict: A reliable baseline. Good if you want something simple and don't switch phones often.

Authy

Best for: Cross-device sync and cloud backup

  • Encrypted cloud backup — don't lose codes when you change phones
  • Works across multiple devices simultaneously
  • App lock with PIN or biometrics
  • Requires phone number registration (privacy consideration)

Verdict: The best balance of security and convenience for most users.

Microsoft Authenticator

Best for: Microsoft 365 and enterprise users

  • Deep integration with Microsoft accounts — push notifications for passwordless sign-in
  • Cloud backup to Microsoft account
  • Supports TOTP for all standard services
  • Slightly heavy for non-Microsoft users

Verdict: Excellent if you use Microsoft 365, Teams, or Azure. Overkill for personal use only.

Aegis Authenticator (Android only)

Best for: Privacy-conscious Android users

  • Completely offline — no cloud sync, no accounts required
  • Encrypted local backup with export options
  • Open source and fully auditable
  • Android only

Verdict: The top choice for security-focused Android users who manage their own backups.

Raivo OTP (iOS only)

Best for: Privacy-conscious iPhone users

  • Open source iOS TOTP app
  • iCloud backup (encrypted)
  • Clean, minimalist interface
  • iOS only

Verdict: Best open-source option for iPhone. Good alternative to Google Authenticator on iOS.

Which Authenticator App Should You Use?

Use Authy if you want reliable cloud backup and multi-device access — ideal for most users.

Use Aegis (Android) or Raivo (iOS) if privacy and open-source are priorities.

Use Google Authenticator if you just want something simple and already use Google.

Or use 2faco.com — generate TOTP codes directly in your browser with zero installation.

Backup and Recovery: What Happens If You Lose Your Phone?

The biggest practical concern with authenticator apps is what happens when you lose your device. Each app handles this differently, and getting it wrong means being locked out of every account that uses 2FA.

Authy stores an encrypted backup of your tokens in the cloud. Install Authy on a new phone, verify your phone number, and all your codes are restored immediately.

Google Authenticator syncs to your Google Account since its 2023 update. Sign in on a new device and your tokens restore automatically.

Microsoft Authenticator backs up to your Microsoft account. Recovery requires signing in with your Microsoft credentials on a new device.

Aegis (Android) requires you to create and store a manual encrypted backup file. This is more secure but requires discipline — if you do not have a recent backup, you lose your tokens.

Raivo (iOS) backs up to iCloud. Recovery is as simple as restoring your iCloud backup.

Before choosing an app, decide your priority: convenience (Authy, Google Authenticator) or control and privacy (Aegis, Raivo).

How to Switch Authenticator Apps Without Losing Access

Switching authenticator apps requires care. The safe process: install the new app, then for each service re-scan the QR code in the new app before removing it from the old one. Never delete your old app until every account is confirmed working in the new one.

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What Makes a Good Authenticator App?

Not all authenticator apps are equal. The key factors to evaluate are: backup and recovery options (can you restore your codes if your phone is lost?), cloud sync (do codes transfer automatically to a new device?), security of the app itself (is it open source or independently audited?), and platform availability (does it work on both iOS and Android, or also on desktop?). A secondary factor many users overlook is import/export capability — if you want to switch apps in the future, can you take your accounts with you?

Google Authenticator

Google Authenticator is the most widely recognised authenticator app. It is simple, works offline, and generates standard TOTP codes. Google added account transfer and cloud backup features in 2023, meaning your codes now sync across devices signed into the same Google account. For straightforward use, Google Authenticator is reliable and works with every platform that supports TOTP.

Authy

Authy was built specifically to solve the backup problem that plagues other authenticator apps. It stores encrypted backups of your 2FA secrets in the cloud, protected by a separate backup password you set. Switching to a new phone is seamless — install Authy, enter your backup password, and all your codes restore immediately. Authy also supports multiple devices simultaneously and has a desktop app.

Aegis (Android) and Raivo (iOS)

For users who prefer open-source, locally-controlled solutions, Aegis (Android) and Raivo (iOS) are the leading choices. Aegis is fully open source, stores your encrypted vault locally with optional manual backup, supports biometric unlock, and has been independently audited. Neither app requires creating an account or trusting a third-party server — an ideal choice for privacy-focused users.

Frequently Asked Questions

Can I use multiple authenticator apps at once? Yes — most platforms let you scan the same QR code into multiple apps, giving you redundancy. Set up your primary app and a backup app simultaneously during 2FA enrollment.

What happens to my authenticator app if my phone is stolen? Your codes are stored locally or in an encrypted cloud backup. A thief cannot access your codes without unlocking your phone. Begin the account recovery process for important accounts to generate new 2FA secrets, invalidating the old ones.

Should I use the same authenticator app for all accounts? Yes — consolidating into one well-chosen app with good backup is simpler and less error-prone than spreading codes across multiple apps.