Best Free Authenticator App

250+ iOS apps curated and reviewed

4.5 avg rating
20 free apps
Updated August 2026

Looking for free free authenticator app? 20 of our 250+ tracked titles are free to download — no subscription, no trial. The rest are premium picks worth paying for.

Compare top Free Authenticator App (August 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1Google AuthenticatorGoogle AuthenticatorFree4.9★ (1.2M)NoNoAug 2026
2Microsoft AuthenticatorMicrosoft AuthenticatorFree4.7★ (687K)NoNoAug 2026
32FA Authenticator (2FAS)2FA Authenticator (2FAS)Free4.7★ (35K)NoNoAug 2026
4Authenticator AppAuthenticator AppFree4.6★ (48K)NoYesAug 2026
5ID.me AuthenticatorID.me AuthenticatorFree4.3★ (100K)NoNoAug 2026
6Duo MobileDuo MobileFree4.9★ (2.2M)NoNoAug 2026
7Authenticator ·Authenticator ·Free4.6★ (26K)NoYesAug 2026
8Authenticator App ™Authenticator App ™Free4.4★ (24K)NoYesAug 2026

Top Picks for Free Authenticator App

Google Authenticator#1

Google Authenticator by Google

Editor's Choice
🔧 Utilities
4.9😞(1.2M ratings)
Free
#4in Utilities
Google Authenticator screenshot 1
Google Authenticator screenshot 2
Google Authenticator screenshot 3
Google Authenticator screenshot 4
Google Authenticator screenshot 5
Google Authenticator screenshot 6

Enhance your online security with a second verification step for your accounts. Generate codes directly on your phone, even offline, to protect against unauthorized access. Sync codes across devices for easy access and manage multiple accounts securely.

What We Love

  • 👍 User-friendly
  • 🔒 Secure authentication
  • 🚀 Simple and fast
  • 🔒 Reliable security

Room to Improve

  • 🐛 Randomly deleted all codes
  • 🐛 Unreliable, lost access to accounts
  • 🐛 Timing issues, codes didn't work
Microsoft Authenticator#2

Microsoft Authenticator by Microsoft Corporation

Protects your online identity
Strong Contender
📊 Productivity
4.7😞(687K ratings)
Free
#5in Productivity
Microsoft Authenticator screenshot 1
Microsoft Authenticator screenshot 2
Microsoft Authenticator screenshot 3
Microsoft Authenticator screenshot 4
Microsoft Authenticator screenshot 5
Microsoft Authenticator screenshot 6

Securely sign into online accounts with multi-factor authentication, passwordless login, or password autofill. Manage multiple accounts, including non-Microsoft services, and access Microsoft products and services seamlessly.

What We Love

  • 🚀 Seamless authentication
  • 🔒 Secure login process
  • 👍 Convenient passwordless sign-in
  • 🚀 Smooth app performance

Room to Improve

  • 🐛 Broken Apple Watch functionality
  • 🐛 Backup and restore issues
  • 🐛 Confusing login flow
2FA Authenticator (2FAS)#3

2FA Authenticator (2FAS) by Two Factor Authentication Service Inc.

#1 Rated 2FA Authenticator
Worth Considering
📊 Productivity
4.7😊(35K ratings)
Free
2FA Authenticator (2FAS) screenshot 1
2FA Authenticator (2FAS) screenshot 2
2FA Authenticator (2FAS) screenshot 3
2FA Authenticator (2FAS) screenshot 4
2FA Authenticator (2FAS) screenshot 5
2FA Authenticator (2FAS) screenshot 6

Securely log in to your online accounts with two-factor authentication. This app protects your personal data and passwords from cyber threats with a simple, private, and open-source solution. It offers easy token restoration, app protection, and offline functionality.

What We Love

  • 🚀 Efficient and fast
  • 🔒 Secure and private
  • 👍 Simple and intuitive UI
  • 💡 Customizable icons and folders

Room to Improve

  • 🐛 Occasional bugs and crashes
  • 🔒 Lack of password/PIN protection
  • 🕰 No Apple Watch app

More Free Authenticator App apps to explore

4
Authenticator App
Authenticator App
Authenticator App
2FA Authentication MFA & OTP
Free

This app provides secure two-factor authentication codes for your online accounts, enhancing security with encryption and backups. It offers seamless synchronization across Apple devices and quick access via widgets, even when offline.

Secure & Private EncryptionEncrypted BackupAutomatic Synchronization
📊 Productivity
(48K)
subscription
5
ID.me Authenticator
ID.me Authenticator
ID.me Authenticator
by ID.me
Free

This app provides a free multi-factor authentication solution for your account, adding an extra security layer to prevent unauthorized access. It generates secure verification tokens, including time-based codes and push notifications, to confirm your identity during login.

Multi-factor authentication (MFA)Time-based one-time passwords (TOTP)Push notification verification
📊 Productivity
(100K)
free
6
Duo Mobile
Duo Mobile
Duo Mobile
Security made simple
Free

Enhance login security with two-factor authentication. Generate passcodes or use one-tap push notifications for seamless access to your accounts. Manage authentication for multiple applications and web services.

Two-factor authenticationPasscode generationPush notification authentication
💼 Business
(2.2M)
free
7
Authenticator ·
Authenticator ·
Authenticator ·
2FA, Two Factor Authentication
Free

Securely store and generate two-factor authentication (2FA) tokens for your online accounts. Protect your accounts from hackers with an additional layer of security. Features encrypted backups, cross-device synchronization, and a private browser.

Secure 2FA token generationEncrypted iCloud backupsCross-device synchronization
🔧 Utilities
(26K)
free with in-app purchases
8
Authenticator App ™
Authenticator App ™
Authenticator App ™
Two Factor Authentication
Free

This app provides a secure way to manage two-factor authentication (2FA) for your online accounts. It generates time-based one-time passwords (TOTP) that update every 30 seconds, offering an extra layer of security without needing an internet connection. Features include iCloud backup, cross-device synchronization, and biometric unlock.

Time-based one-time password (TOTP) generationSecure iCloud backup and encryptionSynchronization across all devices
🔧 Utilities
(24K)
free with in-app purchases
9
Authenticator App - OneAuth
Authenticator App - OneAuth
Authenticator App - OneAuth
Secure your online accounts
Free

Secure your online accounts with industry-standard two-factor authentication. Easily add accounts, generate time-based OTPs, and benefit from encrypted backups. Organize and manage your TFA with features like folders, brand logos, and search.

Add accounts via QR code or manual entryTime-based OTPs (offline access)Encrypted backup and secure recovery
🔧 Utilities
(33K)
free
10
FreeOTP Authenticator
FreeOTP Authenticator
FreeOTP Authenticator
by Red Hat
Free

Generate one-time passwords for enhanced online account security. This app creates temporary codes that, when used with your regular password, significantly strengthen your login protection. It functions even without an internet connection.

Generates one-time passwordsWorks offline (airplane mode)Supports Google, Facebook, GitHub, etc.
🔧 Utilities
(173)
free
11
Authenticator App - 2FA, OTP
Authenticator App - 2FA, OTP
Authenticator App - 2FA, OTP
Backup,Transfer & Protect Code
Free

This app helps you securely manage two-factor authentication (2FA) and one-time password (OTP) codes for all your accounts. It offers features like code preview, secure data backup and transfer, and a password vault for enhanced digital security.

Manage 2FA and OTP codesPreview upcoming authentication codesSecure password vault
🔧 Utilities
(1)
free with in-app purchases
12
Authenticator App 2FA Secure
Authenticator App 2FA Secure
Authenticator App 2FA Secure
2FA Security with Instant OTP
Free

This app provides secure two-factor authentication for your online accounts. It generates time-based one-time passwords (TOTP) for quick and safe logins, adding an extra layer of security against unauthorized access. Access your codes offline and manage them easily to simplify your login process.

Secure 2FA code generationMulti-platform compatibilityOffline access to codes
🔧 Utilities
(1)
freemium
13
Twilio Authy
Twilio Authy
Twilio Authy
by Authy Inc.
Free

This app provides a secure and convenient way to manage two-factor authentication tokens for your online accounts. It offers features like cloud backups, multi-device synchronization, and offline token generation to enhance account security and prevent lockouts.

Secure 2-step verification token generationEncrypted cloud backupsMulti-device synchronization
🔧 Utilities
(53K)
free
14
Authenticator App₊
Authenticator App₊
Authenticator App₊
For 2FA MFA OTP Two ID Verify
Free

This app generates secure, time-based one-time passwords (TOTP) for two-factor authentication (2FA) and multi-factor authentication (MFA). It supports QR code scanning and manual setup, works offline, and offers encrypted backups and iCloud sync across Apple devices.

Secure 2FA & MFA code generationQR code scanner and manual setupOffline authentication codes
🔧 Utilities
(1)
free with in-app purchases
15
Goldman Sachs Authenticator
Goldman Sachs Authenticator
Goldman Sachs Authenticator
Banking & Finance
Free
💰 Finance
(0)
16
Authenticator App - Auth Code
Authenticator App - Auth Code
Authenticator App - Auth Code
2FA Authentication - OTP Token
Free

Enhance your online security by generating secure one-time passwords for social media, email, and crypto wallets. This app offers a fast QR code scanner, biometric security, and works offline. It also includes a robust password manager and strong password generator.

Time-based One-Time Passwords (TOTP)Lightning-Fast QR Code ScannerSecure iCloud Backup & Sync (PRO)
🔧 Utilities
(1)
freemium
17
2FA Authenticator App - TOTP
2FA Authenticator App - TOTP
2FA Authenticator App - TOTP
Two Factor Authentication App
Free

Enhance your account security with this free, private app for two-factor authentication. Generate verification codes offline to protect against unauthorized access, with support for multiple accounts and device synchronization.

Two-factor authenticationOffline code generationTouch ID/Face ID unlock
📊 Productivity
(1)
free with in-app purchases
18
QuickOTP Authenticator Passkey
QuickOTP Authenticator Passkey
QuickOTP Authenticator Passkey
Private 2FA Auth & Passkeys
Free

This app provides private, offline two-factor authentication for your online accounts. It stores your codes securely on your device, encrypted and without trackers, ensuring your data remains private and accessible even without an internet connection.

100% offline accessEncrypted local storageBiometric protection
🔧 Utilities
(2)
freemium
19
iCrypto
iCrypto
iCrypto
by iCrypto
Free

This app generates secure 2-step verification codes for your online accounts. Enhance your digital security by adding an extra layer of protection beyond your password for services like Google and Facebook.

2-Step verification code generationEnhanced account securityIntegration with enterprise access control
📊 Productivity
(2)
free
20
Argus - TOTP Authenticator
Argus - TOTP Authenticator
Argus - TOTP Authenticator
TOTP Authenticator Tools
Free

This open-source utility app generates Time-based One-time Passwords (TOTP) for secure authentication. It offers a lightweight, data-protected experience with support for dark mode, iCloud backups, and Apple Watch integration.

TOTP algorithm support (RFC 6238)Open-sourceLightweight design
🔧 Utilities
(2)
free

FAQ about Free Authenticator App

What is the best free authenticator app for iPhone?
Google Authenticator tops our free authenticator app ranking as of August 2026, with a 4.9-star average from 1.2M App Store ratings, and it's free to download.
Google Authenticator has no ads and has no in-app purchases, according to its App Store listing as of August 2026.
We track 250+ free authenticator app on the iOS App Store as of August 2026, ranked by rating, recency, and analysis of real user reviews.
Google Authenticator adds an extra layer of security to your online accounts by generating a second verification code needed to sign in, in addition to your password. This code is generated on your phone.
You can set up your Authenticator accounts automatically by scanning a QR code provided by the service you wish to secure. This is a quick and easy process that ensures correct setup.

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