Best Protonmail Authenticator Apps

249+ iOS apps curated and reviewed

4.5 avg rating
20 free apps
Updated November 2026

The best protonmail authenticator apps on iPhone average 4.5★ across 249+ titles — we've ranked them by what real users actually keep on their phones. Updated November 2026.

Compare top Protonmail Authenticator Apps (November 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1Proton Authenticator & 2FAProton Authenticator & 2FAFree4.6★ (593)NoNoNov 2026
22FA Authenticator (2FAS)2FA Authenticator (2FAS)Free4.7★ (36K)NoNoNov 2026
3Duo MobileDuo MobileFree4.9★ (2.3M)NoNoNov 2026
4IDMe AuthenticatorIDMe AuthenticatorFree4.3★ (100K)NoNoNov 2026
5NCP AuthenticatorNCP AuthenticatorFree—NoNoMay 2026
6RSA Authenticator (SecurID)RSA Authenticator (SecurID)Free2.7★ (335)NoNoOct 2026
72FA Authenticator-MFA,OTP,Auth2FA Authenticator-MFA,OTP,AuthFree5.0★ (77)NoYesOct 2026
8Salesforce AuthenticatorSalesforce AuthenticatorFree4.6★ (4.3K)NoNoOct 2026

Top Picks for Protonmail Authenticator

Proton Authenticator & 2FA#1

Proton Authenticator & 2FA by Proton AG

Secure verification, MFA & OTP
Editor's Choice
📊 Productivity
4.6😊(593 ratings)
Free
Proton Authenticator & 2FA screenshot 1
Proton Authenticator & 2FA screenshot 2
Proton Authenticator & 2FA screenshot 3
Proton Authenticator & 2FA screenshot 4

Securely manage your two-factor authentication codes with an open-source, end-to-end encrypted authenticator app. It offers seamless cross-device syncing, effortless import from other apps, and robust backup options, all protected by strict Swiss privacy laws. Take control of your digital security with a trusted and private solution.

What We Love

  • 🚀 Cross-platform support
  • 🔒 Secure cloud sync
  • 👍 Easy import from other authenticators
  • 🚀 Convenient 'next' feature for codes

Room to Improve

  • 🐛 Buggy UI (scrolling jitters, random sorting)
  • 👎 Lack of customization options (pin favorites, change icons)
  • 🐛 Sync/login issues on iPad
4.7😊(36K 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
  • 🔒 iCloud backup and sync

Room to Improve

  • 🐛 Occasional bugs and crashes
  • 🔒 Lack of password/PIN protection
  • 🕰 No Apple Watch app
  • 🐛 Issues with push notifications
  • 🕰 Missing desktop/web app
Duo Mobile#3

Duo Mobile by Duo Security LLC

Security made simple
Worth Considering
💼 Business
4.9😐(2.3M ratings)
Free
#20in 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

More Protonmail Authenticator apps to explore

FAQ about Protonmail Authenticator

What are the best protonmail authenticator apps for iPhone?
Proton Authenticator & 2FA tops our protonmail authenticator apps ranking as of November 2026, with a 4.6-star average from 593 App Store ratings, and it's free to download.
Yes — 20 of the top protonmail authenticator apps we rank are free to download, including Proton Authenticator & 2FA and 2FA Authenticator (2FAS).
Proton Authenticator & 2FA has no ads and has no in-app purchases, according to its App Store listing as of November 2026.
We track 249+ protonmail authenticator apps on the iOS App Store as of November 2026, ranked by rating, recency, and analysis of real user reviews.