Best Duo 2Fa Apps

233+ iOS apps curated and reviewed

4.5 avg rating
20 free apps
Updated June 2026

Duo Mobile is the household name in duo 2fa, but it's far from the only option. We track 233+ alternatives and competitors on iOS — many free, many higher-rated than you'd expect.

Compare top Duo 2Fa Apps (June 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1Duo MobileDuo MobileFree4.9★ (2.3M)NoNoSep 2026
22FA Authenticator • Auth App+2FA Authenticator • Auth App+Free4.5★ (102)YesYesAug 2026
32FA Authenticator - Auth App2FA Authenticator - Auth AppFree4.6★ (59)NoYesJun 2026
4Authenticator App ™Authenticator App ™Free4.4★ (24K)NoYesSep 2026
5Authenticator App+Authenticator App+Free4.8★ (12K)YesYesSep 2026
6Google AuthenticatorGoogle AuthenticatorFree4.9★ (1.2M)NoNoSep 2026
72FA Authenticator (2FAS)2FA Authenticator (2FAS)Free4.7★ (35K)NoNoSep 2026
8Authenticator app - 2FA, MFAAuthenticator app - 2FA, MFAFree4.6★ (5.7K)NoYesSep 2026

Top Picks for Duo 2Fa

Duo Mobile#1

Duo Mobile by Duo Security LLC

Security made simple
Editor's Choice
💼 Business
4.9😐(2.3M ratings)
Free
#13in Business
Duo Mobile screenshot 1
Duo Mobile screenshot 2
Duo Mobile screenshot 3
Duo Mobile screenshot 4

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.

What We Love

  • 👍 Simple and easy to use
  • 🔒 Provides an extra layer of security
  • 🚀 Quick and convenient authentication
  • 🔒 Secure login experience
  • 👍 Straightforward and user-friendly
  • 👍 Easy to set up and use

Room to Improve

  • 🐛 Unreliable notifications and push functionality
  • 🐛 Compatibility issues when changing devices
  • 🐛 Slow and frustrating authentication process
  • 🐛 Confusing and non-intuitive user interface
  • 🐛 Forced use of the app causing inconvenience
  • 🐛 Inability to remove or deactivate the app
2FA Authenticator • Auth App+#2

2FA Authenticator • Auth App+ by APPSTER LIMITED

Secure & Fast Authentication
Strong Contender
📊 Productivity
4.5(102 ratings)
FreeAdsIn-App Purchases
2FA Authenticator • Auth App+ screenshot 1
2FA Authenticator • Auth App+ screenshot 2
2FA Authenticator • Auth App+ screenshot 3
2FA Authenticator • Auth App+ screenshot 4
2FA Authenticator • Auth App+ screenshot 5
2FA Authenticator • Auth App+ screenshot 6

Enhance your online account security with this tool that generates two-factor authentication (2FA) codes. It supports a wide range of services and offers effortless setup with a user-friendly interface. Secure your digital identity and gain peace of mind.

2FA Authenticator - Auth App#3

2FA Authenticator - Auth App by Alina Kubiak

Two-Factor Authentication
Worth Considering
🔧 Utilities
4.6(59 ratings)
FreeIn-App Purchases
2FA Authenticator - Auth App screenshot 1
2FA Authenticator - Auth App screenshot 2
2FA Authenticator - Auth App screenshot 3
2FA Authenticator - Auth App screenshot 4
2FA Authenticator - Auth App screenshot 5
2FA Authenticator - Auth App screenshot 6

Secure your online accounts with this fast and reliable two-factor authentication app. Easily add accounts via QR code or manual setup to protect your logins from unauthorized access. Offers sync and backup options for added safety.

More Duo 2Fa apps to explore

FAQ about Duo 2Fa

What are the best duo 2fa apps for iPhone?
Duo Mobile tops our duo 2fa apps ranking as of June 2026, with a 4.9-star average from 2.3M App Store ratings, and it's free to download.
Yes — 20 of the top duo 2fa apps we rank are free to download, including Duo Mobile and 2FA Authenticator • Auth App+.
Duo Mobile has no ads and has no in-app purchases, according to its App Store listing as of June 2026.
We track 233+ duo 2fa apps on the iOS App Store as of June 2026, ranked by rating, recency, and analysis of real user reviews.
Duo Mobile enhances login security by providing two-factor authentication. It generates passcodes and allows for one-tap authentication via push notifications to secure your accounts.
The application works with Duo Security's service to offer secure logins. You can generate passcodes directly within the app or approve login requests with a simple tap on a push notification.