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Best Application Authentication Apps

243+ iOS apps curated and reviewed

4.5 avg rating
20 free apps
Updated July 2026

Whether you're new to application authentication or looking for an upgrade, our curated collection of 243+ iOS apps has something for everyone. Each app is reviewed and rated by real users, helping you make an informed decision.

Top Picks for Application Authentication

Authenticator App ™#1

Authenticator App ™ by Codenhagen.IO ApS

Two Factor Authentication
Editor's Choice
🔧 Utilities
4.4😞(21K ratings)
FreeIn-App Purchases
Authenticator App ™ screenshot 1
Authenticator App ™ screenshot 2
Authenticator App ™ screenshot 3
Authenticator App ™ screenshot 4
Authenticator App ™ screenshot 5
Authenticator App ™ screenshot 6

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.

What We Love

  • 👍 Easy to use
  • 🚀 Works well
  • 👍 Simple and straightforward
  • 🚀 Functional tool

Room to Improve

  • 🐛 Unable to remove accounts
  • 🐛 Difficult to cancel subscription
  • 🐛 Doesn't work as expected
Authenticator App - OneAuth#2

Authenticator App - OneAuth by Zoho Corporation

Secure your online accounts
Strong Contender
🔧 Utilities
4.7😞(33K ratings)
Free
Authenticator App - OneAuth screenshot 1
Authenticator App - OneAuth screenshot 2
Authenticator App - OneAuth screenshot 3
Authenticator App - OneAuth screenshot 4
Authenticator App - OneAuth screenshot 5
Authenticator App - OneAuth screenshot 6

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.

What We Love

  • 🚀 Quick and efficient
  • 🔒 Very secure
  • 👍 Easy to use
  • 💡 Has Apple Watch app

Room to Improve

  • 🐛 Unreliable notifications
  • 🐛 Confusing user interface
  • 🐛 Inconsistent behavior
Authenticator App#3

Authenticator App by UNSTABLE, SL

2FA Authentication MFA & OTP
Worth Considering
📊 Productivity
4.6😊(46K ratings)
FreeIn-App Purchases
#38in Productivity
Authenticator App screenshot 1
Authenticator App screenshot 2
Authenticator App screenshot 3
Authenticator App screenshot 4
Authenticator App screenshot 5
Authenticator App screenshot 6

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.

What We Love

  • 🚀 Works well
  • 🔒 Secure and reliable
  • 👍 Easy to use and set up
  • 💡 Excellent cross-device sync and backup

Room to Improve

  • 🐛 Compatibility issues with newer devices
  • 💰 Expensive subscription
  • 🔒 Limited free version

More Application Authentication apps to explore

4
Authenticator app - 2FA, MFA
Authenticator app - 2FA, MFA
Authenticator app - 2FA, MFA
Two Factor Authentication, OTP
Free

This app provides secure two-factor authentication for over 1000 popular online accounts. It offers quick access via widgets and Apple Watch, and ensures your data is safe with no internet exchange. Easily set up accounts by scanning QR codes or entering secret keys.

Two-factor authentication (2FA)Multi-factor authentication (MFA)Supports 1000+ apps
🔧 Utilities
(5.7K)
free with in-app purchases
5
Authenticator ℠ App
Authenticator ℠ App
Authenticator ℠ App
2FA, Two Factor Authentication
Free

Secure your online accounts with standards-based two-factor authentication. This app generates time-based one-time passwords directly on your device, offering a reliable second step for sign-ins without relying on SMS codes. Protect personal and work accounts across various platforms.

Secure TOTP verification codesFast and easy account setupFull control over 2FA accounts
🔧 Utilities
(4.2K)
free with in-app purchases
6
Authenticator ® App
Authenticator ® App
Authenticator ® App
Two Factor Authentication Aрр
Free

This app enhances online security by managing two-factor authentication codes for over 1,000 applications. It offers features like password leak detection, VPN protection, and secure password autofill, with cloud backups and biometric security options.

Two-factor authentication code generationPassword leak detectionVPN protection
📊 Productivity
(3K)
free with in-app purchases
7
Authenticator App+
Authenticator App+
Authenticator App+
2FA Two Factor Authentication
Free

Secure your online accounts with this app. It generates and stores two-factor authentication codes for popular services. Features include QR code scanning, end-to-end encryption, and device syncing.

Generate and store 2FA/MFA codesScan QR codes or enter manuallyEnd-to-end encryption
📊 Productivity
(12K)
subscription
8
Authenticator App†
Authenticator App†
Authenticator App†
2FA Authentication MFA OTP
Free

Secure your online accounts with a versatile two-factor authentication solution. Manage all your authentication codes in one place, offering enhanced security for websites, services, and crypto wallets. Supports biometric access and offline code generation.

Two-factor authentication (2FA)Multi-factor authentication (MFA)Time-based one-time passwords (TOTP)
🔧 Utilities
(1.8K)
free with in-app purchases
9
Authenticator App - Authkey
Authenticator App - Authkey
Authenticator App - Authkey
Two factor authentication, 2fa
Free

Enhance your online security with this app, offering a secure and reliable method to protect your accounts. It generates unique codes for two-factor authentication, ensuring your personal information stays safe.

Account protection with 2FAEasy setup and managementBackup and sync accounts
🔧 Utilities
(3.3K)
free with in-app purchases
10
Authenticator App ＋
Authenticator App ＋
Authenticator App ＋
Authentication App, Copilot
Free

Secure your online accounts with an authentication and password management tool. It offers AI assistance for setup, generates strong passwords, and detects data leaks and phishing sites. Access is secured with biometric authentication.

Account Authentication CopilotPassword Generator & Manager2FA Support
💼 Business
(1.2K)
free with in-app purchases
11
Authenticator - 2FA App
Authenticator - 2FA App
Authenticator - 2FA App
Protects your online identity
Free

Secure your online accounts with two-factor authentication (2FA). Easily generate and store one-time codes by scanning QR codes or entering details manually. Offers data breach monitoring and a basic password manager for free, with premium features available via subscription.

Two-factor authentication (2FA) code generationQR code scanning for setupBroad service compatibility
🔧 Utilities
(2.5K)
freemium
12
Authenticator App ⁸
Authenticator App ⁸
Authenticator App ⁸
Authentication app, Password
Free

This app enhances password management and recall through memory-testing features and secure storage. It also provides two-factor authentication for an extra layer of online security.

Password recall testsSecure password managerTwo-factor authentication
💼 Business
(720)
free with in-app purchases
13
Authenticator App • 2FA • MFA
Authenticator App • 2FA • MFA
Authenticator App • 2FA • MFA
Secure Passwords with 2FA, MFA
Free

Secure your online accounts with two-factor and multi-factor authentication. Generates time-based one-time passwords (TOTP) and OTP codes for fast, reliable logins. Includes a built-in password manager and encrypted backup for all your credentials.

Two-factor authentication (2FA)Multi-factor authentication (MFA)Time-based one-time passwords (TOTP)
🔧 Utilities
(880)
free with in-app purchases
14
Authenticator© App
Authenticator© App
Authenticator© App
Authenticator App - 2FA, OTP
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) directly on your device, offering enhanced security against interception and SIM swap attacks. Easily set up accounts, access codes offline, and manage your credentials with advanced protection options.

Secure 2FA and OTP generationOffline code accessEasy account setup via QR or manual entry
🔧 Utilities
(155)
free with in-app purchases
15
The Authenticator‎ App
The Authenticator‎ App
The Authenticator‎ App
Authenticate - 2FA, MFA, OTP
Free

Enhance your online security with this app, which generates one-time passwords for two-factor authentication. It helps protect your accounts from unauthorized access and secures your personal data. Cloud storage is available for managing your keys and passwords.

Two-factor authentication (2FA)Multi-factor authentication (MFA)One-time password (OTP) generation
📊 Productivity
(2.6K)
subscription
16
Authenticator App ◦
Authenticator App ◦
Authenticator App ◦
Two Factor Authentication, 2FA
Free

This app enhances your digital security by protecting your online privacy and identity. It offers features like privacy detection for photos, two-factor authentication for accounts, secure storage for personal files, and detection of phishing websites. Safely scan QR codes and barcodes to guard against online threats.

Privacy detection for photosTwo-factor authenticationSecure password-protected folder
🔧 Utilities
(916)
free with in-app purchases
17
Salesforce Authenticator
Salesforce Authenticator
Salesforce Authenticator
by salesforce.com
Free

Enhance your online security with multi-factor authentication. This app sends push notifications to your device for identity verification, allowing you to approve or deny login attempts with a simple tap. It also offers one-time verification codes for offline use and can automate approvals for trusted locations.

Multi-factor authenticationPush notification approvalsOne-time verification codes
💼 Business
(4.1K)
free
18
Authenticator App - 2FA Auth +
Authenticator App - 2FA Auth +
Authenticator App - 2FA Auth +
OTP Two Factor for ID Verify
Free

This app provides secure two-factor authentication (2FA) codes for thousands of online accounts. It also offers a password manager with autofill, encrypted backups, and cross-device sync for enhanced digital security.

Two-Factor Authentication (2FA) codesPassword Manager with AutofillEncrypted Backups
📊 Productivity
(2.2K)
free with in-app purchases
19
LegitApp Authentication
LegitApp Authentication
LegitApp Authentication
Check Handbags & Sneakers
Free

This app provides fast and reliable authentication for luxury items like handbags, sneakers, and watches. Utilizing expert authenticators and AI technology, it offers instant results and official certificates of authenticity for secure buying and selling.

Fast & Accurate AuthenticationOfficial Result CertificateAuthentication Tag
🛍️ Shopping
(9.7K)
free with in-app purchases
20
ID.me Authenticator
ID.me Authenticator
ID.me Authenticator
by ID.me, Inc.
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