Best Site Authenticator Apps

235+ iOS apps curated and reviewed

4.2 avg rating
20 free apps
Updated May 2026

Looking for free site authenticator apps? 20 of our 235+ tracked titles are free to download โ€” no subscription, no trial. The rest are premium picks worth paying for.

Top Picks for Site Authenticator

SITE Authenticator#1

SITE Authenticator by SAUDI INFORMATION TECHNOLOGY COMPANY

Time based one-time-password
Editor's Choice
๐Ÿ”ง Utilities
0.0(0 ratings)
Free
SITE Authenticator screenshot 1
SITE Authenticator screenshot 2
SITE Authenticator screenshot 3
SITE Authenticator screenshot 4
SITE Authenticator screenshot 5
SITE Authenticator screenshot 6

This two-step verification app generates time-based one-time passwords for use with supported applications, adding an extra layer of security to your accounts. Download and start protecting your digital life with an additional layer of authentication.

Microsoft Authenticator#2

Microsoft Authenticator by Microsoft Corporation

Protects your online identity
Strong Contender
๐Ÿ“Š Productivity
4.7๐Ÿ˜ž(655K ratings)
Free
#6in 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

A secure app for easy online account sign-ins, offering multi-factor authentication, passwordless login, and password autofill features. Manage Microsoft and non-Microsoft accounts with added security layers like fingerprint, face ID, or PIN. Stay protected and simplify access to various online services.

What We Love

  • ๐Ÿš€ Seamless authentication
  • ๐Ÿ”’ Secure login process
  • ๐Ÿ‘ Convenient passwordless sign-in
  • ๐Ÿš€ Smooth app performance

Room to Improve

  • ๐Ÿ› Broken Apple Watch functionality
  • ๐Ÿ› Backup and restore issues
  • ๐Ÿ› Confusing login flow
Google Authenticator#3

Google Authenticator by Google LLC

Worth Considering
๐Ÿ”ง Utilities
4.9๐Ÿ˜ž(1M ratings)
Free
#3in 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

A secure two-step verification app that generates codes for logging into online accounts, adding an extra layer of security beyond passwords. Easily sync codes across devices, set up accounts with QR codes, and manage multiple accounts in one place. To start securing your accounts, enable 2-Step Verification on your Google Account.

What We Love

  • ๐Ÿ‘ User-friendly
  • ๐Ÿ”’ Secure authentication
  • ๐Ÿš€ Simple and fast
  • ๐Ÿ”’ Reliable security

Room to Improve

  • ๐Ÿ› Randomly deleted all codes
  • ๐Ÿ› Unreliable, lost access to accounts
  • ๐Ÿ› Timing issues, codes didn't work

More Site Authenticator apps to explore

4
ID.me Authenticator
ID.me Authenticator
ID.me Authenticator
by ID.me, Inc.
Free

A free multi-factor authentication app that adds an extra layer of security to your account with time-based one-time passwords, push notifications, and mobile security keys. Easily verify your identity and protect your account from hackers.

๐Ÿ“Š Productivity
(100K)
5
Salesforce Authenticator
Salesforce Authenticator
Salesforce Authenticator
by salesforce.com
Free

A mobile app that enhances online account security through multi-factor authentication, using push notifications for quick approval or denial of account activities. It also offers one-time verification codes for offline use and can utilize location services for automatic approvals. Secure your accounts that support time-based one-time passwords with this convenient tool.

๐Ÿ’ผ Business
(4.1K)
6
Authenticator App - OneAuth
Authenticator App - OneAuth
Authenticator App - OneAuth
Secure your online accounts
Free

Secure your online accounts with an industry-standard authenticator app. Enable two-factor authentication, back up and sync accounts across all devices easily, and enjoy enhanced security features like passwordless sign-in and biometric authentication. Download now to experience enhanced online security.

๐Ÿ”ง Utilities
(33K)
7
Authenticator App - 2FA MFA
Authenticator App - 2FA MFA
Authenticator App - 2FA MFA
2FA, Two Factor Authentication
Free
๐Ÿ”ง Utilities
(287)
8
Authenticator
Authenticator
Authenticator
Simple 2-factor authentication
Free

"Enhance your online security with a simple, free, and open-source two-factor authentication app. Easily generate unique one-time passwords for your accounts using secure encryption methods, offline capabilities, and support for various password formats. Protect your accounts now!"

๐Ÿ”ง Utilities
(407)
9
Authenticator App - 2FA, OTP
Authenticator App - 2FA, OTP
Authenticator App - 2FA, OTP
Authenticator App - 2FA, OTP
Free
๐Ÿ”ง Utilities
(53)
10
Authenticator App
Authenticator App
Authenticator App
2FA Authentication MFA & OTP
Free

Protect your accounts with an advanced authentication app offering both Two-Factor Authentication (2FA) and Multi-Factor Authentication (MFA) features. Secure your online presence now.

๐Ÿ“Š Productivity
(46K)
11
Authenticator App - Authkey
Authenticator App - Authkey
Authenticator App - Authkey
Two factor authentication, 2fa
Free

A comprehensive 2FA app designed to enhance online security by generating unique access codes for account protection, ensuring the safety of personal information. Secure your accounts easily and reliably with our advanced security protocols.

๐Ÿ”ง Utilities
(3.3K)
12
Authenticator App ๏ผ‹
Authenticator App ๏ผ‹
Authenticator App ๏ผ‹
Authentication App, Copilot
Free

Enhance your online security with an advanced account authentication and password management tool featuring an AI Copilot. Protect your accounts, detect phishing websites, and manage passwords securely and efficiently. Get started now to safeguard your privacy.

๐Ÿ’ผ Business
(1.2K)
13
FreeOTP Authenticator
FreeOTP Authenticator
FreeOTP Authenticator
by Red Hat, Inc.
Free

FreeOTP Authenticator enhances online account security by generating one-time passwords on mobile devices, offering extra protection beyond regular passwords. It supports popular online services like Google and Facebook, and can be used for corporate security with TOTP or HOTP protocols. Open source under the Apache 2.0 license.

๐Ÿ”ง Utilities
(166)
14
Authenticatorโ„ข App
Authenticatorโ„ข App
Authenticatorโ„ข App
Authenticator App
Free

Securely set up your accounts with Authenticatorโ„ข App using QR codes for quick and error-free setup. Backup your data with iCloud for added security and convenience. Get started now to simplify your authentication process.

๐Ÿ”ง Utilities
(239)
15
Yubico Authenticator
Yubico Authenticator
Yubico Authenticator
2FA with YubiKey
Free

Secure your credentials with the Yubico Authenticator by storing them on a hardware-backed key for enhanced security. Generate verification codes to log in to various services without the need for internet connectivity. Experience touch or NFC authentication along with biometric support for added convenience. Find out more at yubico.com.

๐Ÿ“Š Productivity
(268)
16
Authenticator App ยท 2FA
Authenticator App ยท 2FA
Authenticator App ยท 2FA
2FA: Two Factor Authentication
Free

An ultra-secure 2FA app for safeguarding online accounts with TOTP generation and account synchronization across devices. Protect your accounts and streamline 2FA codes management with ease.

๐Ÿ”ง Utilities
(343)
17
Authenticator app - 2FA, MFA
Authenticator app - 2FA, MFA
Authenticator app - 2FA, MFA
Two Factor Authentication, OTP
Free

Protect your accounts with our free authenticator app that offers 2FA security for various platforms. With support for over 1000 apps, including Apple Watch compatibility, ensure your accounts are secure.

๐Ÿ”ง Utilities
(5.6K)
18
OneLogin Protect
OneLogin Protect
OneLogin Protect
by OneLogin, LLC
Free

Ensure the security of your online accounts with a free MFA app that provides two-factor authentication for OneLogin SSO accounts and third-party apps. Features include push notifications, Touch ID/Face ID verification, and TOTP code generation every 30 seconds. For more information, visit onelogin.com/onelogin-protect-authenticator.

๐Ÿ’ผ Business
(561)
19
UniFi Verify
UniFi Verify
UniFi Verify
Secure Your Identity
Free

Enhance your account security with an app that provides two-factor authentication (2FA) for all your logins. Instant setup via QR code, support for multiple accounts and platforms, time-sensitive verification codes, and single-use passwords make this app a must-have for securing your online identity.

๐Ÿ’ผ Business
(11K)
20
Authenticator ยฎ App
Authenticator ยฎ App
Authenticator ยฎ App
Two Factor Authentication Aั€ั€
Free

Enhance your online security with our all-in-one mobile Authenticator App for 2FA and MFA authentication. Simply scan a QR code to secure your accounts with time-sensitive codes, cloud backups, privacy features, and more. Download today for peace of mind in the digital world!

๐Ÿ“Š Productivity
(3K)